Definition of crayfish noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈkreɪfɪʃ//
; NAmE NAmE//ˈkreɪfɪʃ//
(especially British English) (also crawfish North American English, British English) [countable, uncountable] (pl. crayfish, crawfish) Invertebrates
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an animal like a small lobster, that lives in rivers and lakes and can be eaten, or one like a large lobster, that lives in the sea and can be eaten See related entries: Invertebrates Word OriginMiddle English: from Old French crevice, of Germanic origin and related to German Krebs. In the 16th cent. or earlier the second syllable was altered by association with fish.
See the Oxford Advanced American Dictionary entry: crayfish