禍首罪魁 [ㄏㄨㄛˋ ㄕㄡˇ ㄗㄨㄟˋ ㄎㄨㄟˊ; huo4 shou3 zui4 kui2] main offender, criminal ringleader (idiom); main culprit fig. main cause of a disaster ◄ ►