one-night stand
/ˈwʌnˈnaɪt/noun
1
- informal a sexual relationship lasting only one night〈非正式〉一夜情。
1.1
- a person with whom one has such a relationship一夜情的对象。
2
- a single performance of a play or show in a particular place（在某地的）单场演出, 一夜演出。