Definitions for the word "rust" from multiple English dictionaries.
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: The 1913 Webster Unabridged Dictionary, 1913
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: The 1913 Webster Unabridged Dictionary, 1913
3. n.
That which resembles rust in appearance or effects.
Source: The 1913 Webster Unabridged Dictionary, 1913
4. n.
A composition used in making a rust joint. See Rust joint, below.
Source: The 1913 Webster Unabridged Dictionary, 1913
5. n.
Foul matter arising from degeneration; as, rust on salted meat.
Source: The 1913 Webster Unabridged Dictionary, 1913
6. n.
Corrosive or injurious accretion or influence.
Source: The 1913 Webster Unabridged Dictionary, 1913
7. v. i.
To contract rust; to be or become oxidized.
Source: The 1913 Webster Unabridged Dictionary, 1913
8. v. i.
To be affected with the parasitic fungus called rust; also, to acquire a rusty appearance, as plants.
Source: The 1913 Webster Unabridged Dictionary, 1913
9. v. i.
To degenerate in idleness; to become dull or impaired by inaction.
Source: The 1913 Webster Unabridged Dictionary, 1913
10. v. t.
To cause to contract rust; to corrode with rust; to affect with rust of any kind.
Source: The 1913 Webster Unabridged Dictionary, 1913
11. v. t.
To impair by time and inactivity.
Source: The 1913 Webster Unabridged Dictionary, 1913
12. n.
1 reddish corrosive coating formed on iron, steel, etc. By oxidation, esp. When wet. 2 fungal plant-disease with rust-coloured spots. 3 impaired state due to disuse or inactivity. 4 reddish-brown. v. 1 affect or be affected with rust. 2 become impaired through disuse. [old english]
Source: Oxford English Dictionary, 1884
13. slang
“to nab the RUST,” to take offence. RUSTY, cross, ill-tempered,
morose; not able to go through life like a person of easy and “polished”
manners.
Source: The Slang Dictionary, 1864
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