铁罐的英文是"tin can"。这个词来源于古英语中的"tinne"，意思是锡，而"can"则源于拉丁语中的"canna"，意思是罐。铁罐通常是用来盛装食物或饮料的，并在罐盖上密封以保持食物或饮料的新鲜。

例句：

I found a tin can in the trash.

The tin can had a label that said "beef stew".

I opened the tin can with a can opener and ate the beef stew.