rust
noun
[ rʌst ]
• 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"
• a fungal disease of plants which results in reddish or brownish patches.
• a reddish-brown colour.
• "her rust-coloured coat"
rust
verb
• be affected with rust.
• "the blades had rusted away"
Origin:
Old English rūst, of Germanic origin; related to Dutch roest, German Rost, also to red.
