džins

1. denim
   Kupila sam novu džins jaknu. — I bought a new denim jacket.
   Ova suknja je od džinsa. — This skirt is made of denim.
2. colloq. jeans
   Na posao uglavnom nosim džins i patike. — I usually wear jeans and trainers to work.

The trousers themselves are more often called farmerke in Serbia; džins often works as a modifier: džins jakna.