[ 'mɒləsk ]
( US mollusk )
■ noun Zoology an invertebrate of a large phylum (Mollusca) including snails, slugs, and mussels, with a soft unsegmented body and often an external shell.
Derivatives
~an mə'lʌsk(ə)n adjective
Origin
C18: from mod. L. ~a , neut. plural of L. ~us , from mollis 'soft'.