U

floss

noun Also called floss silk (for defs 1, 3).

the cottony fiber yielded by the silk-cotton tree.
silk filaments with little or no twist, used in weaving as brocade or in embroidery.
any silky, filamentous matter, as the silk of corn.
dental floss.

verb (used without object)

to use dental floss on the teeth.

verb (used with object)

to clean (the teeth) with dental floss.

noun

the mass of fine silky fibres obtained from cotton and similar plants
any similar fine silky material, such as the hairlike styles and stigmas of maize or the fibres prepared from silkworm cocoons
untwisted silk thread used in embroidery, etc
See dental floss

verb

(tr) to clean (between one’s teeth) with dental floss

“rough silk,” 1759, perhaps from French floche “tuft of wool” (16c.), from Old French floc “tuft, lock,” from Latin floccus “tuft of wool.” Or from an unrecorded Old English or Old Norse word from the root found in Dutch flos “plush” (17c.). Cf. the surname Flossmonger, attested 1314, which might represent a direct borrowing from Scandinavian or Low German. In “The Mill on the Floss” the word is the proper name of a fictitious river in the English Midlands.