dominatrix
nouna woman who controls a man during sex, often using violence to give sexual pleasure 虐恋女主人（性生活中常以性虐待等制伏男子） Word Originmid 16th cent. (rare before the late 20th cent.): from Latin, feminine of dominator, from dominat- ‘ruled’, from the verb dominari, from dominus ‘lord, master’.