‖n.; pl. Limuli [ 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 ]