/ˌserəˈneɪd ||; ˌsɛrəˈned/noun [C] a song or tune played or sung at night by a lover outside the window of the woman he loves 小夜曲
serenade²
/ˌserəˈneɪd ||; ˌsɛrəˈned/verb [T] to sing or play music to sb (as done in the past by a man singing under her window to the woman he loved) 唱小夜曲；奏小夜曲: We were serenaded by a string quartet. 弦乐四重奏乐队为我们演奏小夜曲。