屁股
❶buttocks;bottom;ass
❷ (of animals)rump; hindquarter
❸protruding part on the back of an object
打某人的~give sb a spanking/替某人擦~clean up the mess for sb/老虎~摸不得like a tiger whose backside no one dares to touch—not to be provoked/汽车~ rear of a car /烟~cigarette butt