tuner (n.) Look up tuner at Dictionary.com
"one who tunes musical instruments," 1801, agent noun from tune (v.). From 1570s as "musician, singer." From 1909 as "device for varying the frequency of a radio or (later) television."
tunesmith (n.) Look up tunesmith at Dictionary.com
1926, U.S. colloquial coinage, from tune (n.) + smith (n.).
tung Look up tung at Dictionary.com
1889, from Chinese tong.
tungsten (n.) Look up tungsten at Dictionary.com
rare metallic element, 1796, from Swedish tungsten "calcium tungstate," coined 1780 by its discoverer, Swedish chemist Karl Wilhelm Scheele (1742-1786) from tung "heavy" + sten "stone" (see stone (n.)). The word was used earlier as the name for calcium tungstate (1770). Atomic symbol W is from Latin wolframium, from German Wolfram "iron tungstate" (see wolfram).
tunic (n.) Look up tunic at Dictionary.com
late 15c., from Middle French tunique (12c.) or directly from Latin tunica "undergarment worn by either sex" (source of Spanish tunica, Italian tonica, Old English tunece, Old High German tunihha), probably from a Semitic source (compare Hebrew kuttoneth "coat," Aramaic kittuna). Also see chitin.
tunicate (adj.) Look up tunicate at Dictionary.com
1760, from Latin tunicatus "clothed with a tunic only (i.e. without a toga), in shirt-sleeves," past participle of tunicare "to clothe in a tunic," from tunica (see tunic). As a noun, from 1848.
tuning (n.) Look up tuning at Dictionary.com
1550s, "action of putting in tune," verbal noun from tune (v.). Of motors, from 1863. Tuning fork attested from 1776, supposedly invented by John Shore (d.1753), royal trumpeter.
[Shore] was a man of humour and pleasantry, and was the original inventor of the tuning-fork, an instrument which he constantly carried about him, and used to tune his lute by, and which whenever he produced it gave occasion to a pun. At a concert he would say, "I have not about me a pitch-pipe, but I have what will do as well to tune by, a pitch-fork." [Sir John Hawkins, "A General History of the Science and Practice of Music," London, 1776]
tunnel (n.) Look up tunnel at Dictionary.com
early 15c., "funnel-shaped net for catching birds," from Middle French tonnelle "net," or tonel "cask," diminutive of Old French tonne "tun, cask for liquids," possibly from the same source as Old English tunne (see tun).

Sense of "tube, pipe" (1540s) developed in English and led to sense of "underground passage" (1660s). This sense subsequently has been borrowed into French (1878). The earlier native word for this was mine (n.). Meaning "burrow of an animal" is from 1873. Tunnel vision first recorded 1912. The amusement park tunnel of love is attested from 1911 (in reference to New York's Luna Park). The figurative light at the end of the tunnel has been seen since 1882.
The "Tunnel of Love," an attraction found at many amusement parks, has been responsible for a surprising number of proposals. In this and similar devices, couples are allowed to drift through dark or semi-dark underground caverns, usually in a boat or gondola borne on an artificial stream of water. ... Their dim interiors often give a bashful young man the opportunity to propose. ["The American Magazine," July 1922]
tunnel (v.) Look up tunnel at Dictionary.com
"excavate underground," 1795, from tunnel (n.). From 1570s as "furnish with a tunnel." Related: Tunneled; tunneling.
tunny (n.) Look up tunny at Dictionary.com
large sea-fish of the mackerel order, 1520s, probably from Middle French thon (14c.), from Old Provençal ton and directly from Latin thunnus "a tuna, tunny," from Greek thynnos "a tuna, tunny," possibly with a literal sense of "darter," from thynein "dart along."
tup (n.) Look up tup at Dictionary.com
"male sheep," c. 1300, Scottish and Northern English; of unknown origin. As a verb, "to copulate," 1540s. Related: Tupped; tupping.
tupelo (n.) Look up tupelo at Dictionary.com
American black gum tree, 1730, from an Algonquian language, such as Cree ito opilwa "swamp tree," Muskogee eto opelwv.
Tupi (n.) Look up Tupi at Dictionary.com
a native language group of South America, also Tupian.
tuppence (n.) Look up tuppence at Dictionary.com
mid-15c., to-pens, representing the common pronunciation of twopence (see two + pence).
Tupperware (n.) Look up Tupperware at Dictionary.com
1954, trademark (reg. U.S.), from Earl S. Tupper, president of Tupper Corp., + ware (n.). Patent claims use from 1950.
tuque (n.) Look up tuque at Dictionary.com
type of cap worn in Canada, 1871, from Canadian French variant of French toque (see toque).
turban (n.) Look up turban at Dictionary.com
1560s, from Middle French turbant (15c.), from Italian turbante (Old Italian tolipante), from Turkish tülbent "gauze, muslin, tulle," from Persian dulband "turban." The change of -l- to -r- may have taken place in Portuguese India and thence been picked up in other European languages. A men's headdress in Muslim lands, it was popular in Europe and America c. 1776-1800 as a ladies' fashion. Related: Turbaned.
turbid (adj.) Look up turbid at Dictionary.com
1620s, from Latin turbidus "muddy, full of confusion," from turbare "to confuse, bewilder," from turba "turmoil, crowd," probably from Greek tyrbe "turmoil, tumult, disorder," from PIE *(s)twer- (1) "to turn, whirl" (see storm (n.)). Related: Turbidly; turbidness.
turbidity (n.) Look up turbidity at Dictionary.com
1782, from Medieval Latin turbiditas, from Latin turbidus (see turbid). Turbidity current is from 1939.
turbine (n.) Look up turbine at Dictionary.com
1838, from French turbine (19c.), from Latin turbinem (nominative turbo) "spinning top, eddy, whirlwind, that which whirls," related to turba "turmoil, crowd" (see turbid). Originally applied to a wheel spinning on a vertical axis driven by falling water. Turbo in reference to gas turbine engines is attested from 1904.
turbo- Look up turbo- at Dictionary.com
word-forming element, abstracted c. 1900 from turbine; influenced by Latin turbo "spinning top." E.g. turbocharger (1934), aeronautic turboprop (1945, with second element short for propeller); turbojet (1945).
turbot (n.) Look up turbot at Dictionary.com
large, edible flatfish, c. 1300, from Old French turbut (12c., Modern French turbot), probably from a Scandinavian source (compare Old Swedish törnbut, from törn "thorn" + but "flatfish;" see halibut). But OED says of uncertain origin and speculates on a connection to Latin turbo "spinning top."
turbulence (n.) Look up turbulence at Dictionary.com
early 15c., from Late Latin turbulentia "trouble, disquiet," from Latin turbulentus (see turbulent). In reference to atmospheric eddies that affect airplanes, by 1918. Related: Turbulency.
turbulent (adj.) Look up turbulent at Dictionary.com
early 15c., "disorderly, tumultuous, unruly" (of persons), from Middle French turbulent (12c.), from Latin turbulentus "full of commotion, restless, disturbed, boisterous, stormy," figuratively "troubled, confused," from turba "turmoil, crowd" (see turbid). In reference to weather, from 1570s. Related: Turbulently.
turd (n.) Look up turd at Dictionary.com
Old English tord "piece of excrement," from Proto-Germanic *turdam (cognates: Middle Dutch torde "piece of excrement," Old Norse tord-yfill, Dutch tort-wevel "dung beetle"), from PIE *drtom, past participle of root *der- (2) "to split, peel, flay, tear;" thus "that which is separated ("torn off") from the body" (compare shit (v.) from root meaning "to split;" Greek skatos from root meaning "to cut off; see scatology). As a type of something worthless and vile, it is attested from mid-13c. Meaning "despicable person" is recorded from mid-15c.
A tord ne yeue ic for eu alle ["The Owl and the Nightingale," c. 1250]

Alle thingis ... I deme as toordis, that I wynne Crist. [Wyclif, Phil. iii.8, 1382; KJV has "I count all things ... but dung, that I may win Christ"]
tureen (n.) Look up tureen at Dictionary.com
1706, from French terrine "earthen vessel," from Old French therine (15c.), noun use of fem. of terrin (adj.) "earthen," from Gallo-Roman *terrinus, from Latin terrenus "of the earth" (see terrain).
turf (n.) Look up turf at Dictionary.com
Old English turf, tyrf "slab of soil and grass, sod," also "surface of grassland," from Proto-Germanic *turb- (cognates: Old Norse torf, Danish tørv, Old Frisian turf, Old High German zurba, German Torf), from PIE root *drebh- "to wind, compress" (cognates: Sanskrit darbhah "tuft of grass").

Especially "the race course," hence the turf "the profession of racing horses" (1755). French tourbe "turf" is a Germanic loan-word. The Old English plural was identical with the singular, but in Middle English turves sometimes was used. Slang meaning "territory claimed by a gang" is attested from 1953 in Brooklyn, N.Y.; earlier it had a jive talk sense of "the street, the sidewalk" (1930s), which is attested in hobo use from 1899, and before that "the work and venue of a prostitute" (1860). Turf war is recorded from 1962.
turf (v.) Look up turf at Dictionary.com
early 15c., "to cover (ground) with turf," from turf (n.). Related: Turfed; turfing.
turgid (adj.) Look up turgid at Dictionary.com
1610s, from Latin turgidus "swollen, inflated, distended," from turgere "to swell," of unknown origin. Figurative use in reference to prose is from 1725. Related: Turgidly; turgidness.
turgor (n.) Look up turgor at Dictionary.com
1857, from medical Latin turgor, from Latin turgere "to swell" (see turgid).
Turin Look up Turin at Dictionary.com
city in northern Italy, Italian Torino, Roman Augusta Taurinorum, probably from the Taurini, a Ligurian people who had a capital there, the name perhaps from Celtic *tauro "mountain" or *tur "water," but long interpreted by folk etymology as from Latin taurus "bull."
Turing machine (n.) Look up Turing machine at Dictionary.com
1937, named for English mathematician and computer pioneer Alan M. Turing (1912-1954), who described such a device in 1936.
Turk (n.) Look up Turk at Dictionary.com
c. 1300, from French Turc, from Medieval Latin Turcus, from Byzantine Greek Tourkos, Persian turk, a national name, of unknown origin. Said to mean "strength" in Turkish. Compare Chinese tu-kin, recorded from c. 177 B.C.E. as the name of a people living south of the Altai Mountains (identified by some with the Huns). In Persian, turk, in addition to the national name, also could mean "a beautiful youth," "a barbarian," "a robber."

In English, the Ottoman sultan was the Grand Turk (late 15c.), and the Turk was used collectively for the Turkish people or for Ottoman power (late 15c.). From 14c. and especially 16c.-18c. Turk could mean "a Muslim," reflecting the Turkish political power's status in the Western mind as the Muslim nation par excellence. Hence Turkery "Islam" (1580s); turn Turk "convert to Islam."

Meaning "person of Irish descent" is first recorded 1914 in U.S., apparently originating among Irish-Americans; of unknown origin (Irish torc "boar, hog" has been suggested). Young Turk (1908) was a member of an early 20c. political group in the Ottoman Empire that sought rejuvenation of the Turkish nation. Turkish bath is attested from 1640s; Turkish delight from 1877.
turkey (n.) Look up turkey at Dictionary.com
1540s, originally "guinea fowl" (Numida meleagris), a bird imported from Madagascar via Turkey, and called guinea fowl when brought by Portuguese traders from West Africa. The larger North American bird (Meleagris gallopavo) was domesticated by the Aztecs, introduced to Spain by conquistadors (1523) and thence to wider Europe. The word turkey first was applied to it in English 1550s because it was identified with or treated as a species of the guinea fowl, and/or because it got to the rest of Europe from Spain by way of North Africa, then under Ottoman (Turkish) rule. Indian corn was originally turkey corn or turkey wheat in English for the same reason.

The Turkish name for it is hindi, literally "Indian," probably influenced by Middle French dinde (c. 1600, contracted from poulet d'inde, literally "chicken from India," Modern French dindon), based on the then-common misconception that the New World was eastern Asia.
After the two birds were distinguished and the names differentiated, turkey was erroneously retained for the American bird, instead of the African. From the same imperfect knowledge and confusion Melagris, the ancient name of the African fowl, was unfortunately adopted by Linnæus as the generic name of the American bird. [OED]
The New World bird itself reputedly reached England by 1524 at the earliest estimate, though a date in the 1530s seems more likely. The wild turkey, the North American form of the bird, was so called from 1610s. By 1575, turkey was becoming the usual main course at an English Christmas. Meaning "inferior show, failure," is 1927 in show business slang, probably from the bird's reputation for stupidity. Meaning "stupid, ineffectual person" is recorded from 1951. Turkey shoot "something easy" is World War II-era, in reference to marksmanship contests where turkeys were tied behind a log with their heads showing as targets. To talk turkey (1824) supposedly comes from an old tale of a Yankee attempting to swindle an Indian in dividing up a turkey and a buzzard as food.
Turkey Look up Turkey at Dictionary.com
country name, late 14c., from Medieval Latin Turchia, from Turcus (see Turk) + -ia.
turkey-vulture (n.) Look up turkey-vulture at Dictionary.com
1823, from turkey + vulture. From 1670s as turkey-buzzard.
Turkish (adj.) Look up Turkish at Dictionary.com
1540s, from Turk (n.) + -ish. As a noun, "the Turkish language," from 1718.
Turkoman Look up Turkoman at Dictionary.com
also Turcoman, c. 1600, from Medieval Latin Turcomannus, from Persian Turkman, literally "Turk-like," from Turk + -man "like."
Turkophile Look up Turkophile at Dictionary.com
also Turcophile, 1876, from comb. form of Turk + -phile.
turmeric (n.) Look up turmeric at Dictionary.com
pungent powder made from the root of an East Indian plant, 1530s, altered from Middle English turmeryte (early 15c.), of uncertain origin, perhaps from Middle French terremérite "saffron," from Medieval Latin terra merita, literally "worthy earth," though the reason why it would be called this is obscure. Klein suggests it might be a folk-etymology corruption of Arabic kurkum "curcuma, saffron."
turmoil (n.) Look up turmoil at Dictionary.com
1520s, of uncertain origin, perhaps an alteration of Middle French tremouille "mill hopper," in reference to the hopper's constant motion to and fro, from Latin trimodia "vessel containing three modii," from modius, a Roman dry measure, related to modus "measure." Attested earlier in English as a verb (1510s), though this now is obsolete.
turn (v.) Look up turn at Dictionary.com
late Old English turnian "to rotate, revolve," in part also from Old French torner "to turn away or around; draw aside, cause to turn; change, transform; turn on a lathe" (Modern French tourner), both from Latin tornare "to polish, round off, fashion, turn on a lathe," from tornus "lathe," from Greek tornos "lathe, tool for drawing circles," from PIE root *tere- (1) "to rub, rub by turning, turn, twist" (see throw (v.)). Transitive sense in English is from c. 1300. Related: Turned; turning.

Use in expression to turn (something) into (something else) probably retains the classical sense of "to shape on a lathe." To turn up "arrive, make an appearance" is recorded from 1755. Turn about "by turns, alternately" is recorded from 1640s. To turn (something) loose "set free" is recorded from 1590s. Turn down (v.) "reject" first recorded 1891, American English. Turn in "go to bed" is attested from 1690s, originally nautical. To turn the stomach "nauseate" is recorded from 1620s. To turn up one's nose as an expression of contempt is attested from 1779.

Turning point is attested by 1640s in a figurative sense "point at which a decisive change takes place;" literal sense "point on which a thing turns; point at which motion in one direction ceases and that in another or contrary direction begins" is from 1660s.
turn (n.) Look up turn at Dictionary.com
c. 1200, "action of rotating," from Anglo-French tourn (Old French torn, tour), from Latin tornus "turning lathe;" also partly from turn (v.). Meaning "an act of turning, a single revolution or part of a revolution" is attested from late 15c. Sense of "place of bending" (in a road, river, etc.) is recorded from early 15c. Meaning "beginning of a period of time" is attested from 1853 (as in turn-of-the-century, from 1921 as an adjectival phrase).

Sense of "act of good will" is recorded from c. 1300. Meaning "spell of work" is from late 14c.; that of "an individual's time for action, when these go around in succession" is recorded from late 14c. The automatic automobile turn-signal is from 1915. Turn-sick "dizzy," is attested from early 15c. Phrase done to a turn (1780) suggests meat roasted on a spit. The turn of the screw (1796) is the additional twist to tighten its hold, sometimes with reference to torture by thumbscrews.
turn-around (n.) Look up turn-around at Dictionary.com
also turnaround, 1936, from verbal phrase turn around "reverse," 1880, American English, from turn (v.) + around (adv.).
turn-off (n.) Look up turn-off at Dictionary.com
"something that dampens one's spirits" recorded by 1971 (said to have been in use since 1968), from verbal phrase turn off "stop the flow of" (1850), from turn (v.) + off (adv.). Turn-off (n.) as "place where one road diverges from another" is from 1881.
turn-on (n.) Look up turn-on at Dictionary.com
that which arouses or excites, 1968, originally of psychedelic drugs, from verbal phrase turn on "activate (a mechanism)" (1833), specifically from figurative sense turn (someone) on "excite, stimulate, arouse," recorded from 1903; from turn (v.) + on (adv.).
turn-out (n.) Look up turn-out at Dictionary.com
"audience, assemblage of persons who have come to see a show, spectacle, etc.," 1816, from the verbal phrase; see turn (v.) + out (adv.).
turnbuckle (n.) Look up turnbuckle at Dictionary.com
also turn-buckle, 1703, "catch or fastening for windows and shutters," from turn (v.) + buckle (n.). Meaning "coupling with internal screw threads for connecting metal rods" is attested from 1877.
turncoat (n.) Look up turncoat at Dictionary.com
1550s, from turn (v.) + coat (n.). The image is of one who attempts to hide the badge of his party or leader. The expression to turn one's coat "change principles or party" is recorded from 1560s.
turner (n.) Look up turner at Dictionary.com
c. 1400, "one who works a lathe," agent noun from turn (v.). As a surname from late 12c.