屁股臀子 [－－－－]

Jyutping pei3 gu2 tyun4 zi2
Pinyin pì gu tún zi

Definitions (Wiktionary)
  1. noun, Xiang
    buttock; butt cheek
    (syn.) 屁股爿, 尻川䫌, 尻川𱂮, 屁股蛋子