Nas″sa (?), n.; pl. E. Nassas (#), L. NassÆ (#). [From L. nassa a kind of basket, in allusion to the reticulation of some species.] (Zoöl.) Any species of marine gastropods, of the genera Nassa, Tritia, and other allied genera of the family Nassidæ; a dog whelk. See Illust. under Gastropoda.
— nas″soid (#), a.