A box used to provide a soiling area for (usually) pet cats, generally filled with sand, clay chips, etc.

(idiomatic, dated) A self-satisfied person. / (idiomatic) A highly sought-after and fancy example of something.

An urban feral cat. / (figuratively, humorous) A slut, a sexually promiscuous woman or prostitute.

(idiomatic) To undertake a dangerous action in the service of a group.

Alternative spelling of cathouse

(US) A Maine Coon

(zoology) A small wild cat, Prionailurus iriomotensis, found only on the Japanese island of Iriomote. It has a long, dark brown coat with darker rows of horizontal spots.

Alternative form of cat's-paw

Any large feline animal, especially one of the Panthera genus, including tigers, lions, jaguars and leopards. / Used other than figuratively or idiomatically: see big, cat.

(nautical) A version of the cat-o'-nine-tails (multi-tail whip), which has only five (instead of nine) 'tails' (thongs) of smooth whipcord.