ㄕㄚˋㄒㄧㄝˇshàxiě

shàxuèㄕㄚˋ ㄒㄩㄝˋ
  1. 古代盟誓表示誠意吸吮嘴脣牲畜 歃血為盟」。

to smear one's lips with the blood of a sacrifice as a means of pledging allegiance (old)​