Meaning of crustacean

crus•ta•cean

Pronunciation: (kru-stā'shun), [key]
— n.
  1. any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
—adj.
  1. belonging or pertaining to the crustaceans.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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