Rust

·vt To impair by time and inactivity.

II. Rust ·vi To contract rust; to be or become oxidized.

III. Rust ·noun Corrosive or injurious accretion or influence.

IV. Rust ·noun That which resembles rust in appearance or effects.

V. Rust ·noun Foul matter arising from degeneration; as, rust on salted meat.

VI. Rust ·noun A composition used in making a rust joint. ·see Rust joint, below.

VII. Rust ·vi To degenerate in idleness; to become dull or impaired by inaction.

VIII. Rust ·vt To cause to contract rust; to corrode with rust; to affect with rust of any kind.

IX. Rust ·vi To be affected with the parasitic fungus called rust; also, to acquire a rusty appearance, as plants.

X. Rust ·noun 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.

XI. Rust ·noun 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.