From Longman Dictionary of Contemporary Englishldoce_299_dshellfishshell‧fish /ˈʃelˌfɪʃ/ noun (plural shellfish) [countable, uncountable] DFan animal that lives in water, has a shell, and can be eaten as food, for example crabs, lobsters, and oysters
Examples from the Corpus
shellfish• Shellfish shippers are certified and each package of shellfish should bear the certificate number of the shipper.• Tightly wrap or store in covered containers all cooked meat, poultry, and fish and shellfish and refrigerate them promptly.• Specialities are fresh fish and shellfish.• Fish and shellfish or dairy foods could show up daily, but would be optional.• He studies phytoplankton toxins that are eaten by shellfish, which then become potent vectors of these toxins paralytic to humans.• Tests on 16 fossilised shellfish showed that acid dating is as accurate as carbon dating.• The most expensive item consisted of several kinds of shellfish in a sauce and sounded as if it was better avoided. 