"rough silk," 1759, of uncertain origin, perhaps from French floche "tuft of wool" (16c.), from Old French floc "tuft, lock," from Latin floccus "tuft of wool" (see flock (n.2)). Or from a dialectal survival of an unrecorded Old English or Old Norse word from the root of fleece (n.). Compare 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. Meaning "fine silk thread" is from 1871, short for floss silk (1759). Dental floss is from 1872; the verb floss in reference to use of it is from 1909. Related: Flossed; flossing.
例文
1. Brush your teeth after each meal and floss daily.
食後に歯を磨き、毎日歯の線を使って歯の隙間をきれいにします。
2.Draw the floss backwards and forwards between the teeth.
歯の線を歯の間で往復させます。/
3.I know it 's a good idea to use detal floss .
歯の線を使うのはいい考えだと知っています。/
4.Craft Resources also sells yarn and embroidery floss .
工芸士サービス会社では、糸や刺繍糸も販売しています。/
5.His black hair fine as floss silk,hung in glossy curls about his round dimpled face.