verb

1. 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.”

adjective

1. 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.”

Synonyms: nonrusting, stainless