early 14c., from Old French flaute (12c.), from Old Provençal flaut, of uncertain origin, perhaps imitative or from Latin flare "to blow;" perhaps influenced by Provençal laut "lute." The other Germanic words (cf. German flöte) are likewise borrowings from French.
Ancient flutes were blown through a mouthpiece, like a recorder; the modern transverse or German flute developed 18c. The older style then sometimes were called flûte-a-bec (French, literally "flute with a beak"). The modern design and key system of the concert flute were perfected 1834 by Theobald Boehm. The architectural sense of "furrow in a pillar" (1650s) is from fancied resemblance to the inside of a flute split down the middle. Meaning "tall, slender wine glass" is from 1640s.