crupper (harness strap running over a horse's hindquarters and under its tail)
紂 [纣]
Jyutping
zau6
Pinyin
zhòu
Definitions (CC-CEDICT)
(bound form) Zhou, pejorative name given posthumously to the last king of the Shang dynasty 商紂王|商纣王[Shang1 Zhou4 wang2] (the name refers to a crupper 紂|纣[zhou4], the piece of horse tack most likely to be soiled by the horse)
Definitions (CC-CANTO)
saddle crupper (harness strap on horse's back)/name of an emperor