| crab | (noun) a stroke of the oar that either misses the water or digs too deeply | - |
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| (noun) decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincers | - |
| (noun) a louse that infests the pubic region of the human body | Synonyms: crab louse, Phthirius pubis, pubic louse |
| (noun) the edible flesh of any of various crabs | Synonyms: crabmeat |
| (noun) a quarrelsome grouch | Synonyms: crabby person |
| (verb) complain | Synonyms: beef, bellyache, bitch, gripe, grouse, holler, squawk |
| (verb) fish for crab | - |
| (verb) scurry sideways like a crab | - |
| (verb) direct (an aircraft) into a crosswind | - |