Real Dictionary

rusty
A rusty metal object such as a car or a machine is covered with rust, which is a brown substance that forms on iron or steel when it comes into contact with water.
adjective: If a skill that you have or your knowledge of something is rusty, it is not as good as it used to be, because you have not used it for a long time.

rusty in American English
coated with rust, as a metal, or affected with the disease of rust, as a plant
noun: a male or female given name

rusty in American English 1
adjective: covered with or affected by rust

rusty in American English 2
adjective: restive; stubborn

rusty in British English
adjective: covered with, affected by, or consisting of rust