Main Entry: cone

Pronunciation: \ˈkōn\

Function: noun

1 : a solid having a circular base and sides that slope evenly to a point
2 a : any of the conical photosensitive receptor cells of the vertebrate retina that function in color vision—compare rod b : any of a family (Conidae) of numerous somewhat conical tropical gastropod mollusks that include a few highly poisonous forms—see conus
3 : a cusp of a tooth especially in the upper jaw