(Internet slang, humorous, pun) Christmas Eve, as a night of sexual activity between young couples

(euphemistic) job in the nightlife / sex industry

night rain

rain that falls during the nighttime; night rain

supper, dinner

stray cat; alley cat

Synonym of シャム (“Siamese cat”)

Cheshire cat

(sumo) A distracting clap, literally fool-the-cat, loudly clapping hands in front of an opponent’s face to distract them at the start of a sumo match.

(fiction, art) (human's) eye with a shape evocative of a cat's eye, large and almond-shaped