Noun | 1. | rust - a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture |
2. | rust - a reddish-brown discoloration of leaves and stems caused by a rust fungus | |
3. | rust - the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water Synonyms: rusting | |
4. | ![]() Synonyms: rust fungus | |
Verb | 1. | rust - become destroyed by water, air, or an etching chemical such as an acid; "The metal corroded"; "The pipes rusted" Synonyms: corrode |
2. | rust - cause to deteriorate due to the action of water, air, or an acid; "The acid corroded the metal"; "The steady dripping of water rusted the metal stopper in the sink" | |
3. | rust - become coated with oxide | |
Adj. | 1. | rust - of the color of rust Synonyms: rusty |