资料来源 : pyDict

小型轻松歌剧;滑稽歌剧

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Operetta \Op`er*et"ta\, n. [It., dim. of opera.] (Mus.)
   A short, light, musical drama.

资料来源 : WordNet®

operetta
     n : a short amusing opera [syn: {light opera}]