One of the brachyuran Crustacea. They are mostly marine, and usually have a broad, short body, covered with a strong shell or carapace. The abdomen is small and curled up beneath the body.
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The zodiacal constellation Cancer.
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A crab apple; -- so named from its harsh taste.
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A cudgel made of the wood of the crab tree; a crabstick.
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A movable winch or windlass with powerful gearing, used with derricks, etc.
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A form of windlass, or geared capstan, for hauling ships into dock, etc.