Cat  n. 1 small soft-furred four-legged domesticated animal. 2 wild animal of the same family, e.g. Lion, tiger. 3 colloq. Malicious or spiteful woman. 4 = *cat-o'-nine-tails.  the cat's whiskers colloq. Excellent person or thing. Let the cat out of the bag reveal a secret. Like a cat on hot bricks very agitated. Put (or set) the cat among the pigeons cause trouble. Rain cats and dogs rain hard. [latin cattus]