- 1covered with rust rusty metal a rusty old car
- 2[not usually before noun] (informal) (of a sport, skill, etc.) not as good as it used to be, because you have not been practicing My tennis is very rusty these days. I haven't played the piano for ages—I may be a little rusty.
noun [uncountable]See rusty in the Oxford Advanced Learner's Dictionary
Check pronunciation: rusty