形容词

1. 生锈的
A rusty metal object such as a car or a machine is covered with rust, which is a brown substance that forms on iron or steel when it comes into contact with water.

2. (技术、知识等)荒废的，生疏的
If a skill that you have or your knowledge of something is rusty, it is not as good as it used to be, because you have not used it for a long time.

3. 铁锈色的;赭色的;深褐色的
Rusty is sometimes used to describe things that are reddish-brown in colour.

1. of the brown color of rust

Synonym: rustrust-brown

2. ancient

e.g. hoary jokes

Synonym: hoary

3. covered with or consisting of rust

e.g. a rusty machine
rusty deposits

4. impaired in skill by neglect

Synonym: out of practice(p)