English Dictionary

rust

/ɹʌst/

noun

The deteriorated state of iron or steel as a result of moisture and oxidation. / A similar substance based on another metal (usually with qualification, such as "copper rust"). / A reddish-brown color.

I love the color of rust on old metal.

意味（1）

The deteriorated state of iron or steel as a result of moisture and oxidation.

The rust on my bicycle chain made cycling to work very dangerous.

意味（2）

A similar substance based on another metal (usually with qualification, such as "copper rust").

aerugo. Green or blue-green copper rust; verdigris. (American Heritage Dictionary, 1973)

意味（3）

A reddish-brown color.

rust:

意味（4）

A disease of plants caused by a reddish-brown fungus.

意味（5）

(philately) Damage caused to stamps and album pages by a fungal infection.