拊髀

fǔbì
to slap one's own buttocks in excitement or despair

CEDICT

手拍腿。表振奮、嗟嘆或欣喜的樣子。

重編國語辭典

Entry Composition

1 拊 fǔ pat
2 髀 bì
  1. buttocks
  2. thigh