Dungeness crab

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An edible crab (Cancer magister) found along the Pacific coast from Alaska to central California.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Cancer magister, a species of crab found in the Pacific Ocean that has sweet-tasting meat.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun flesh of Cancer magister (Dungeness crab)
• noun small edible crab of Pacific coast of North America