[1] : The Collaborative International Dictionary of English v.0.48

mollusk \mol"lusk\, n. f. mollusque, l. mollusca a kind of soft
   nut with a thin shell, fr. molluscus soft, mollis soft. see
   mollify. zool.
   one of the mollusca. written also mollusc.
   1913 webster
see also:
mollify mollusc 

[2] : WordNet (r) 2.0

mollusk
     n : invertebrate having a soft unsegmented body usually enclosed
         in a shell syn: mollusc, shellfish
see also:
mollusc shellfish 

Mollusk >> M Words
Mollusk, definition of term: Mollusk
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