| Clue | Source | Date |
|---|---|---|
| Become rusty, e.g. | The Telegraph Cross Atlantic | 04 Mar 2026 |
| In the box I'd a test tube to create a chemical change (7) | ||
| Put protective coat on cow I go out with | The Guardian Cryptic | 13 Jul 2023 |
| Put protective coat on farm animal I take out | ||
| Become rusty | New York Times | 28 Feb 2018 |
| Rust | New York Times | 23 Feb 2018 |
| Rust | ||
| Become rusty | ||
| Get rusty | ||
| Get rusty | Universal | 13 Sep 2015 |
| Get rusty | ||
| Rust or combust | ||
| Rust | ||
| Add Oxygen | ||
| Combine with a certain gas. | ||
| Cover with a coating of rust. |