Definition of crawfishes:
(n) :
(United States, especially Southern US, Louisiana and Texas, Midwest, Western US) Any of various freshwater crustaceans: crayfish.
(n) :
(South Africa) Any of various marine crustaceans, rock lobster; especially Jasus lalandii, the Cape crawfish.
(v) :
(intransitive, colloquial, Southern US) To backpedal, desert or withdraw (also used with out).
(v) :
(intransitive) To fish for crawfish.
(n) :
(Quebec, Canada, slang, derogatory) An English-Canadian. Used in some corners of Quebec (including the Gaspé).