shellfish

Any of various edible aquatic invertebrate animals having a shell, especially mollusks such as clams and oysters, and crustaceans such as lobsters, crabs, and shrimp.

An edible mollusk, in contrast to a crustacean.

The edible flesh of such animals.

An aquatic animal, not a fish, having a shell, and especially one which comes under popular notice as used for food or for ornament.

A crustaceous animal, or crustacean, as a crab, lobster, shrimp, or prawn.

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.

An aquatic invertebrate, such as a mollusc or crustacean, that has a shell.

meat of edible aquatic invertebrate with a shell (especially a mollusk or crustacean)

invertebrate having a soft unsegmented body usually enclosed in a shell