shellfish /ˈʃɛlˌfɪʃ/ noun plural shellfish
plural shellfish
Learner's definition of SHELLFISH
: an animal (such as a crab or an oyster) that has a hard outer shell and that lives in water水生有壳动物(如螃蟹、牡蛎) [count]
[noncount]
— see color picture on this page