rust
nounfeminine/fɨ.ˈʁu.ʒɐ̃j̃/medium
fer·ru·gem
Definition
Layer of oxide, usually reddish or brownish in colour, that forms on the surface of iron or some metal alloys due to oxidation.
The old iron gate was covered in rust.
It is important to treat rust quickly to prevent the metal from being damaged.
Common collocations
rust on the carrust stainprevent rustrust-proof product
Idiomatic expressions
- to gather rust (to be idle, unused, deteriorating)
Etymology
Do latim 'ferrugo, ferruginis'.