družina

1. company; band; fellowship
   Cela družina se okupila kod mene na roštilju. — The whole gang got together at my place for a barbecue.
   Gledali smo „Družinu prstena“ treći put. — We watched "The Fellowship of the Ring" for the third time.
2. (of performers) troupe
   Putujuća pozorišna družina gostovala je u našem gradu. — A travelling theatre troupe performed in our town.
3. (historical) armed band; troop
   Hajduk je sa svojom družinom živeo u šumi. — The hajduk lived in the forest with his band.

In everyday speech a group of friends is more often "društvo" or "ekipa".