- 1[countable] a sea creature with a hard shell, eight legs, and two pincers (= curved and pointed arms for catching and holding things). Crabs move sideways on land. see hermit crab
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- 2[uncountable] meat from a crab, used for food dressed crab
- 3crabs (informal) the condition caused by having lice (calledcrab lice) in the hair around the genitals
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