Rust″y (?), a. [AS. rustig.] [Compar.Rustier (�); superl.Rustiest.] 1. Covered or affected with rust; as, a rusty knife or sword; rusty wheat.
2. Impaired by inaction, disuse, or neglect.
in this dull and long-continued truce,
Is rusty grown. Shak.
3. Discolored and rancid; reasty; as, rusty bacon.
4. Surly; morose; crusty; sullen. “Rusty words.” Piers Plowman.
5. Rust-colored; dark. “Rusty blood.” Spenser.
6. Discolored; stained; not cleanly kept; filthy.
The rusty little schooners that bring firewood from the British provinces. Hawthorne.
7. (Bot.) Resembling, or covered with a substance resembling, rust; affected with rust; rubiginous.