lame

An injury that affects someone's ability to walk properly is called lame.

When we say something is lame, it usually means it's not very good or interesting. People often use this word when they talk about a movie, a book, or an activity. For example, if you ask your friend what he thinks of the new video game and he says "it's so lame," it probably means he didn't enjoy it much. On the other hand, if someone is lame as in unable to walk properly due to an injury, we might say they're on crutches or have a cast on their leg. This is a completely different meaning of the word lame. In informal language, the first sense of lame (something being unimpressive) is often used more frequently than the second sense (a physical disability).