Noun old world crayfish has 1 sense
  1. Old World crayfish, ecrevisse - small crayfish of Europe and Asia and western North America
    --1 is a kind of crayfish, crawfish, crawdad, crawdaddy
    --1 is a member of Astacus, genus Astacus
    --1 has parts: crayfish, crawfish, crawdad, ecrevisse
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