(uncountable) A children's game of forming string into various shapes around one's fingers. / (countable, idiomatic) Any complicated structure that appears to be without purpose.

(electronics) The wire that touches the crystal in a crystal radio.

plural of cat's whisker

Something considered to be outstanding. / Java tea (Orthosiphon aristatus)

(idiomatic) Alternative spelling of cat's pyjamas

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

Alternative form of cat's-paw

Alternative form of cat's eye.

(countable, Britain, Ireland, New Zealand, usually in the plural) A retroreflective device placed on a road surface as a marking that can be seen even at night.

(tic-tac-toe) A tie game. Comes from the concept that a cat cannot catch its own tail just like a player in tic-tac-toe cannot win a game that is already tied.