crutch

1. N-COUNT A crutch is a stick whose top fits around or under the user's arm, which someone with an injured foot or leg uses to support their weight when walking. 拐杖

I can walk without the aid of crutches. 我能夠不借助拐杖走路。

2. N-SING If you refer to someone or something as a crutch, you mean that they give you help or support. (提供幫助、支持的) 人或物

He gave up the crutch of alcohol. 他不再依賴酒精。