rđa

1. rust
   Ograda je puna rđe, treba je ofarbati. — The fence is covered in rust; it needs painting.
   Rđa je pojela donji deo automobila. — Rust has eaten away the bottom of the car.
2. colloq. derog. (of a person) scoundrel; good-for-nothing
   Ne veruj mu, on je obična rđa. — Don't trust him, he's a real scoundrel.