CRAB
1 none. 1 a ten-footed crustacean, with the first pair of legs as pincers. B crab as food. 2 (crab) sign or constellation cancer. 3 (in full crab-louse) (often in plural.) Parasitic louse transmitted sexually to esp. Pubic hair. 4 machine for hoisting heavy weights. ? catch a crab rowing jam an oar or miss the water. ? crablike adjective. [old english]