rust

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Pronunciation[change]

Noun[change]

Singular
rust

Plural
rusts

Rust on a wire.
  1. (uncountable) Rust is a reddish material that forms on metal objects when in contact with moisture.
    The car had a little rust, but it was generally in good shape.
  2. (uncountable) Rust is a plant disease caused by fungus.

Related words[change]


Verb[change]

Plain form
rust

Third-person singular
rusts

Past tense
rusted

Past participle
rusted

Present participle
rusting

  1. (intransitive) If metal rusts, it gets covered in rust.
    She painted the metal pole to stop it from rusting.