- 1if metal rusts or something rusts it, it becomes covered with rust synonym corrode
- 2 old rusting farming implements Brass doesn't rust. The floor of the car had rusted through. rust something Water had got in and rusted the engine.
- adjective rusted iron see also rusty Phrasal Verbsrust away
NAmE//rʌst//[intransitive, transitive]Verb Forms present simple I / you / we / they rust
he / she / it rusts
past simple rusted
-ing form rusting
rustedjump to other results