horseshoe crab definition

  • noun:
    • any one of different marine arthropods for the course Merostomata, specifically Limulus polyphemus or Xiphosura polyphemus of eastern united states, having a large curved body and a stiff pointed end. Also known as king-crab, limulus.
    • a kind of chelicerate arthropod, associated with genus Limulus, resembling a crab.
    • huge marine arthropod for the Atlantic coast of united states having a domed carapace this is certainly shaped like a horseshoe and a stiff pointed end; a full time income fossil about the wood-louse

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