"Rusticate" Natural Recordings by Native Speakers
To send someone or something to a less prestigious institution or a rural area for education or exile, often as a form of punishment.
The term "rust-proof" refers to something that is resistant to or protected against rust, a form of corrosion that occurs when iron or its alloys, such as steel, come into contact with air and moisture, leading to the formation of iron oxide, or rust.
Removing a clergyman from his office, esp. as a penalty, but not exactly removing the title.