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    rust
    /rʌst/

    noun

    • 1. a reddish- or yellowish-brown flaking coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture: "paint protects your car from rust"
    • 2. a fungal disease of plants which results in reddish or brownish patches.

    verb

    • 1. be affected with rust: "the blades had rusted away"

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