gojiti

1. (gojiti se) to gain weight; to get fat
   Od kad je prestao da trenira, stalno se goji. — Ever since he stopped training, he keeps gaining weight.
   Zimi se svi malo gojimo. — In winter we all put on a bit of weight.
2. (of food) to be fattening
   Kažu da hleb uveče goji. — They say bread in the evening is fattening.
   Slatkiši mnogo goje. — Sweets are very fattening.
3. (of animals) to fatten up
   Deda svake godine goji dve svinje. — Grandpa fattens up two pigs every year.

In the meaning "to gain weight" it is used with se: gojiti se.