shellfish Meaning, Definition & Usage
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noun meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean)
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noun invertebrate having a soft unsegmented body usually enclosed in a shell
mollusk; mollusc.
WordNet
Shell"fish` noun
Definitions
(Zoöl.) Any aquatic animal whose external covering consists of a shell, either testaceous, as in oysters, clams, and other mollusks, or crustaceous, as in lobsters and crabs.
