n.

1. 小夜曲；情歌

vt.

1. 对……唱（或奏）小夜曲
   He serenaded his girlfriend every night in front of her window.

   他每天晚上都在女友的窗前演奏小夜曲。

vi.

1. 唱（或奏）小夜曲

n.

1. a piece of music sung or played in the open air, especially by a man at night under the window of the woman he loves.
2. another term for serenata.

v.