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Word of the Day Tuesday, June 9, 2026

rust

/rʌst/ noun, verb · British & US
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What does rust mean?

noun, verb

A reddish-brown substance formed by the oxidation of iron or steel, or a flaky reddish-brown deposit on metal. To become or cause to become covered in this substance.

Example

"The old car had a thick layer of rust on its hood."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for rust

Antonyms of rust

Rhymes with rust

Etymologically related