N-COUNT(可数名词) Your ass is your buttocks. 屁股 [美国英语][非正式,粗话]
I jumped back and fell on my ass.
我往后一跳,摔了个屁股墩。
N-COUNT(可数名词) If you describe someone as an ass, you think that they are silly or do silly things. 蠢货 [非正式]
He was generally disliked and regarded as a pompous ass.
他普遍不受喜欢且被认为是个自命不凡的蠢货。
N-COUNT(可数名词) An ass is an animal related to a horse but that is smaller and has long ears. 驴