A humorous remark or story intended to make people laugh; a joke.
彼のジョークでみんなが笑った。
Everyone laughed at his joke.
それはジョークでしょう？本気にしないで。
That was a joke, right? Don't take it seriously.
ジョークを言うタイミングが重要だ。
Timing is important when telling a joke.