ukrotiti

1. (of an animal) to tame
   Dreseru je trebalo godinu dana da ukroti lava. — It took the trainer a year to tame the lion.
2. (fire, temper, inflation) to bring under control; to rein in
   Vatrogasci su konačno ukrotili požar. — The firefighters finally brought the fire under control.
   Niko nije uspeo da ukroti njenu narav. — Nobody managed to tame her temper.

The imperfective is krotiti.