King'-crāb, n.

n. (Zoöl.) A very large crustacean of the genus Limulus, having the form of a horse’s foot; hence often called horse-foot, and horse-shoe. It has no jaws, its organs of mastication being the six pairs of feet so situated as to surround the mouth. The basal portion of these are armed with strong spines, which serve the purpose of teeth. [See Illust. of Limule.]