Definition for SEA-UR-CHIN

SEA-UR-CHIN, n. [sea and urchin.]

A genus of marine animals, the Echinus, of many species. The body is roundish, covered with a bony crust, and often set with movable prickles. This and the sea-egg, and the sea-hedgehog, belong to the family of radiated animals. – Encyc.

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