1 [C] a sea creature with a hard shell, eight legs and two PINCERS (= curved and pointed limbs for catching and holding things). Crabs move sideways on land.
seealsoHERMITCRAB
2 [U] meat from a crab, used for food:
dressed crab
3 (crabs) (informal) the condition caused by having LICE (called crab lice) in the hair around the GENITALS
