crab

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Related to Crab Lice: Body lice

crab

(krab),
1. A crustacean, many varieties of which are edible.
2. An insect, the crab louse, Pthirus pubis.

crab

(krăb)
n.
1.
a. Any of various chiefly marine decapod crustaceans of the infraorder Brachyura, having a hard carapace that covers a broad flattened cephalothorax with a small abdomen tucked beneath it, and an anterior pair of legs that are large and pincerlike.
b. Any of various similar decapod crustaceans, such as a hermit crab or a king crab.
c. Crabmeat.
2.
a. A crab louse.
b. crabs Slang Infestation by crab lice.

crab′ber n.

crab

a decapod CRUSTACEAN (suborder Brachyura) characterized by a large flattened, laterally expanded carapace below which the abdomen is curled forward.
References in periodicals archive ?
Also called crab lice, or simply "crabs," public lice seen close up resemble a crab, with two grasping "arms" in front.
The same products that get rid of head lice will also do away with crab lice.