ㄩㄢˊyuánㄒㄩㄥxiōng

  1. 為首作亂文選··容與》:桴鼓元凶。」水滸傳·》:胸襟膽氣拒敵官軍剪除元凶首惡。」脅從從犯

chief offender, main culprit
Hauptschuldiger (S)​