- 1a piece of cloth that is put over or in someone's mouth to stop the person from speaking
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- 2(informal) a joke or action that makes people laugh, especially in a show or movie synonym joke a running gag (= one that is regularly repeated during a performance) a sight gag (= one that does not involve speaking)
- 3a trick you play on someone It was just a gag—we didn't mean to upset anyone.
Check pronunciation: gag