Answer: shellfish

AnswerCrossword Clue
SHELLFISHClams and oysters
SHELLFISHClams and crabs
SHELLFISHScallop.
SHELLFISHWhat an underwater gunner can do
SHELLFISHMollusks
SHELLFISHNonkosher food
SHELLFISHOyster, e.g.
SHELLFISHMollusk or crustacean
SHELLFISHCause of some allergic reactions
SHELLFISHWhat some are allergic to
shellfishAn aquatic shelled mollusk (e.g., an oyster or cockle) or a crustacean (e.g., a crab or shrimp), esp. one that is edible
shellfisha shelled aquatic invertebrate, esp a mollusc or crustacean, or such animals collectively
shellfishSuch mollusks or crustaceans as food