Definition from Wiktionary, the free dictionary
- Resistant to rust, oxidation and corrosion.
- This is supposed to be a rustproof trashcan, but it can't handle the salt they use on our roads.
resistant to rust, oxidation and corrosion
- To make resistant to rust, such as by applying a coating.
- We'll rustproof the metal with a good coat of paint and then we'll be able to leave it outdoors for years without damage.