单词	crayfish
释义	cray·fish \ˈkrā+ˌ-\ noun Etymology: by folk etymology from Middle English crevis, from Middle French crevice, of Germanic origin; akin to Old High German krebiz crab — more at crab 1. : any of numerous freshwater crustaceans of the tribe Astacura resembling the lobster but usually much smaller in size, all those of the northern hemisphere belonging to a single family (Astacidae) which includes the genera Astacus with species in Europe, Asia, and western No. America, and Cambarus to which most No. American forms belong 2. : spiny lobster [crayfish 1]
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