Blue crab Meaning, Definition & Usage

  1. noun Atlantic crab; most common source of fresh crabmeat
  2. noun bluish edible crab of Atlantic and Gulf Coasts of North America
    Callinectes sapidus.

WordNet

Definitions
  1. (Zoöl.), the common edible crab of the Atlantic coast of the United States (Callinectes hastatus).

Webster 1913