rear end 1. 后部；尾端 the rear end of a car 汽车的后部 the rear end of a train 列车的尾端 2. 〈口〉臀部，屁股 It was amusing to see the rear ends of the dignified gentlemen disappearing under the edge of the tent. 看着那些大腹贾撅着屁股钻进帐篷去真有趣极了。 The sergeant could not chew our rear ends off any more. 军士长再也没法折磨我们了。