'horseshoe crab' definitions:
Definition of 'horseshoe crab'
From: WordNet
noun
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, Xiphosurus polyphemus]
Definition of 'horseshoe crab'
From: GCIDE
- Limulus \Lim"u*lus\ (l[i^]m"[-u]*l[u^]s), n.; pl. Limuli (-l[imac]). [L., dim. of limus sidelong, askance.] (Zool.) The only existing genus of Merostomata. It includes only a few species from the East Indies, and one ({Limulus polyphemus}) from the Atlantic coast of North America. Called also Molucca crab, king crab, horseshoe crab, and horsefoot. [1913 Webster]