rust

1. n. The reddish yellow coating formed on iron when exposed to moist air, consisting of ferric oxide or hydroxide; hence, by extension, any metallic film of corrosion. Source: opted

2. n. A minute mold or fungus forming reddish or rusty spots on the leaves and stems of cereal and other grasses (Trichobasis Rubigo-vera), now usually believed to be a form or condition of the corn mildew (Puccinia graminis). As rust, it has solitary reddish spores; as corn mildew, the spores are double and blackish. Source: opted

3. n. That which resembles rust in appearance or effects. Source: opted

4. n. A composition used in making a rust joint. See Rust joint, below. Source: opted

5. n. Foul matter arising from degeneration; as, rust on salted meat. Source: opted

6. n. Corrosive or injurious accretion or influence. Source: opted

7. v. i. To contract rust; to be or become oxidized. Source: opted

8. v. i. To be affected with the parasitic fungus called rust; also, to acquire a rusty appearance, as plants. Source: opted

9. v. i. To degenerate in idleness; to become dull or impaired by inaction. Source: opted

10. v. t. To cause to contract rust; to corrode with rust; to affect with rust of any kind. Source: opted

11. v. t. To impair by time and inactivity. Source: opted

12. adj. of the brown color of rust Source: wordnet

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