1. Covered with or consisting of rust
   "a rusty machine"; "rusty deposits"
    
2. Impaired in skill by neglect
   "After months without playing, the pianist felt rusty";
   - out of practice
    
3. Of the brown colour of rust
   "The rusty autumn leaves covered the ground";
   - rust, rust-brown
    
4. Ancient
   "rusty jokes";
   - hoary

Derived forms: rustier, rustiest

See also: chromatic, old, rusted, unskilled

Encyclopedia: Rusty, Starlight Express