oyster crab Hear it!

oyster crab definition

oyster crab

any of various small, thin-shelled crabs (family Pinnotheridae) that live as commensals in the gill cavities of oysters, clams, etc.

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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