rust

Definition

A reddish-brown substance formed by the oxidation of iron or steel when exposed to moisture.

हिन्दी लोहे या स्टील के नमी के संपर्क में आने पर ऑक्सीकरण से बना लाल-भूरा पदार्थ।

Example

"The old bicycle was covered in rust after being left outside all winter."