资料来源 : WordNet®

Xiphosurus polyphemus
     n : large marine arthropod of the Atlantic coast of North
         America having a domed carapace that is shaped like a
         horseshoe and a stiff pointed tail; a living fossil
         related to the wood louse [syn: {horseshoe crab}, {king
         crab}, {Limulus polyphemus}]