软体动物
Mollusk \Mol"lusk\, n. [F. mollusque, L. mollusca a kind of soft nut with a thin shell, fr. molluscus soft, mollis soft. See {Mollify}.] (Zo["o]l.) One of the Mollusca. [Written also {mollusc}.]
mollusk n : invertebrate having a soft unsegmented body usually enclosed in a shell [syn: {mollusc}, {shellfish}]