- (North American English) (British English arse)(taboo, slang)
the part of the body that you sit on; your bottom 屁股；腚 - (British English, informal)
a stupid person 蠢人；笨蛋 Don't be such an ass! 别那么傻头傻脑的！ I made an ass of myself at the meeting—standing up and then forgetting the question. 我在会议上出了个大洋相，站起来却忘了要问的问题。
- (British English, old use)
a donkey 驴
Word Originsenses 2 to 3 Old English assa, from a Celtic word related to Welsh asyn, Breton azen, based on Latin asinus.sense 1variant of arse.
Idioms
blow smoke (up somebody’s ass)
- (North American English, taboo, slang)
to try to trick somebody or lie to somebody, particularly by saying something is better than it really is 吹牛皮；说大话蒙人
bust your ass (doing something/to do something) (North American English, taboo, slang)
(also bust a gut British and North American English, informal, also North American English, informal bust your butt/chops/hump)
- (informal)
to make a great effort to do something 驴 I busted my ass to get into law school. 我拼了命考上了法学院。 It’s a problem which nobody is going to bust a gut trying to solve. 没有人会竭尽全力去解决这个问题。 These guys were busting their butts on the field, trying to excel at athletics. 这些人在赛场上拼尽全力，试图在体育方面出类拔萃。
cover your ass (North American English, taboo, slang)
(also cover your back British and North American English, informal)
to realize that you may be blamed or criticized for something later and take action to avoid this 粉饰污点；防止可预见的指责 Get everything in writing in order to cover your ass. 把所有的东西都写下来，这样可以保护你的屁股。
get your ass in gear | move your ass (North American English)
(British English get your arse in gear, move your arse )
- (taboo, slang)
a rude way of telling somebody to hurry 别磨磨蹭蹭的；赶快 If you get your ass in gear, we can make it out of here tonight. 如果你准备好了，我们今晚就能离开这里。
get your ass over/in here, etc.
- (taboo, North American English, slang)
a rude way of telling somebody to come here, etc. 滚过来（或进来等）
kick (some/somebody’s) ass
- (North American English, taboo, slang)
to punish or defeat somebody 惩罚，击败（某人）
kiss somebody’s ass; kiss ass (North American English)
(British English kiss somebody’s arse)
- (taboo, slang)
to be very nice to somebody in order to persuade them to help you or to give you something 谄媚巴结某人；拍某人马屁；奉承某人
a pain in the ass/butt (North American English, taboo, slang)
(British English, taboo, slang a pain in the arse/backside)
(also a pain in the neck informal)
a person or thing that is very annoying 极讨厌的人（或事物） That man's a pain in the ass! 那个人真讨厌！