Noun ecrevisse has 2 senses
  1. crayfish, crawfish, crawdad, ecrevisse - tiny lobster-like crustaceans usually boiled briefly
    --1 is a kind of shellfish
    --1 is a part of American crayfish; Old World crayfish, ecrevisse
  2. Old World crayfish, ecrevisse - small crayfish of Europe and Asia and western North America
    --2 is a kind of crayfish, crawfish, crawdad, crawdaddy
    --2 is a member of Astacus, genus Astacus
    --2 has parts: crayfish, crawfish, crawdad, ecrevisse
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