noun a small stream of water.
2. floss ·noun untwisted filaments of silk, used in embroidering.
3. floss ·noun the slender styles of the pistillate flowers of maize; also called silk.
4. floss ·add. ·noun a body feather of an ostrich. flosses are soft, and gray from the female and black from the male.
5. floss ·noun fluid glass floating on iron in the puddling furnace, produced by the vitrification of oxides and earths which are present.