Medical Dictionary
crab
noun \ˈkrab\
Medical Definition of CRAB
1
: any of a tribe (Brachyura) of chiefly marine crustaceans with a short broad usually flattened carapace, a small abdomen that curls forward beneath the body, short antennae, and the anterior pair of limbs modified as grasping pincers
2
crabs pl : infestation with crab lice
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