crawfish
noun (especially North American English)(also crayfish especially in British English)
[countable, uncountable] (plural crawfish, crayfish)
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 淡水螯虾；刺龙虾 Word Originearly 17th cent.: variant of crayfish.