stone (n.) Look up stone at Dictionary.com
Old English stan, used of common rocks, precious gems, concretions in the body, memorial stones, from Proto-Germanic *stainaz (cf. Old Norse steinn, Danish steen, Old High German and German stein, Gothic stains), from PIE *stai- "stone," also "to thicken, stiffen" (cf. Sanskrit styayate "curdles, becomes hard;" Avestan stay- "heap;" Greek stear "fat, tallow," stia, stion "pebble;" Old Church Slavonic stena "wall").

Slang sense of "testicle" is from mid-12c. The British measure of weight (usually equal to 14 pounds) is from late 14c., originally a specific stone. Stone's throw for "a short distance" is attested from 1580s. Stone Age is from 1864. To kill two birds with one stone is first attested 1650s.
stone (adj.) Look up stone at Dictionary.com
intensifying adjective, 1935, first recorded in black slang, probably from earlier use in phrases like stone blind (late 14c., literally "blind as a stone"), stone deaf, etc., from stone (n.). Stone cold sober dates from 1937.
stone (v.) Look up stone at Dictionary.com
c.1200, "to pelt with stones," from stone (n.). Related: Stoned; stoning.