do sb in
(infml 口)
(a) kill sb 杀死某人
She was so depressed she felt like doing herself in. 她心灰意冷想要自杀.
(b) = do sb over.
(c) (usu passive 通常用於被动语态) exhaust sb 使某人筋疲力尽
Come in and sit down you look done in. 进来坐坐吧--你看来累坏了. do sth in (infml 口) injure (a part of the body) 伤害到(身体某部)
He did his back in lifting heavy furniture. 他在抬沉重的家具时扭伤了腰.