rust

1. N-UNCOUNT Rust is a brown substance that forms on iron or steel, for example when it comes into contact with water. 銹

...a decaying tractor, red with rust. …一輛腐朽的拖拉機，因生銹而呈紅色。

2. V-I When a metal object rusts, it becomes covered in rust and often loses its strength. 生銹

Copper nails are better than iron nails because the iron rusts. 銅釘比鐵釘好，因為鐵釘會生銹。

3. COLOR Rust is sometimes used to describe things that are reddish brown in colour. 鐵銹色 (的)

...rust and gold leaves from the maples. …鐵銹色和金黃色相間的楓葉。