Noun blue crab has 2 senses
  1. blue crab - Atlantic crab; most common source of fresh crabmeat
    --1 is a kind of
    crab, crabmeat
    --1 is a part of blue crab, Callinectes sapidus
  2. blue crab, Callinectes sapidus - bluish edible crab of Atlantic and Gulf coasts of North America
    --2 is a kind of swimming crab
    --2 is a member of Callinectes, genus Callinectes
    --2 has parts: blue crab
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