They ribbed him for confusing the two words.是什么意思？

They ribbed him for confusing the two words.

他们嘲笑他把这两个字混淆了.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

ribbed

adj. 有肋骨的，有棱纹的；

例句
...special ribbed tyres.
特殊的棱纹轮胎

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

confusing

adj. 令人困惑的，混乱的，混淆的；v. 使困窘，使混乱不清(confuse的现在分词)；

例句
Great care is taken to avoid confusing the two types of projects...
大家非常谨慎，以免把这两类项目弄混。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

words

n. 字( word的名词复数 )，（说的）话，诺言，口令；

例句
She felt as if his words had granted her absolution.
她感觉他的那番话好似给她下了道赦令。