The noun rust has 4 senses (no senses from tagged texts)
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, rusting -- (the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water)
4. rust, rust fungus -- (any of various fungi causing rust disease in plants)
Overview of verb rust
The verb rust has 3 senses (first 1 from tagged texts)
1. (2) corrode, rust -- (become destroyed by water, air, or an etching chemical such as an acid; "The metal corroded"; "The pipes rusted")
2. corrode, eat, 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)
Overview of adj rust
The adj rust has 1 sense (no senses from tagged texts)
1. rust, rusty, rust-brown -- (of the brown color of rust)