noun
paper card; paper note
Refers to a small piece of paper used as a card, note, or slip, often in contexts like games, labels, or informal messages.
紙牌に番号を書いて箱に入れた。
I wrote numbers on paper cards and put them in a box.
彼は紙牌にメモを残して出かけた。
He left a note on a paper slip and went out.