Pronunciation: (flôs, flos),[key] —n. 1. the cottony fiber yielded by the silk-cotton tree.
2. silk filaments with little or no twist, used in weaving as brocade or in embroidery.
3. any silky, filamentous matter, as the silk of corn.
4. See dental floss.
—v.i. to use dental floss on the teeth.
—v.t. to clean (the teeth) with dental floss. Also called floss' silk"(for defs. 1-3).