rust

1. (intransitive) To oxidize, especially of iron or steel.Examples: "The patio furniture had rusted in the wind-driven spray."; "Your gold and silver have rusted, and their rust will be evidence against you and will eat your flesh like fire."intransitive

2. (transitive) To cause to oxidize.Examples: "The wind-driven spray had thoroughly rusted the patio furniture."transitive

3. (intransitive) To be affected with the parasitic fungus called rust.Examples: "I am sorry to say that, contrary to the majority, I have to report that the forage rusted rather badly."intransitive

4. (ambitransitive, figuratively) To (cause to) degenerate in idleness; to make or become dull or impaired by inaction.Examples: "Must I rust in Egypt? never more / Appear in arms, and be the chief of Greece?"ambitransitivefiguratively

5. (intransitive) Of a black cat or its fur, to turn rust-coloured following long periods of exposure to sunlight.Examples: "It's very common for black cats to rust during the summer."intransitive

1. (computer languages) A multiparadigm programming language focused on safety, especially safe concurrency.Examples: "In Rust, the compiler plays a gatekeeper role by refusing to compile code with these elusive bugs, including concurrency bugs."