trti

1. (hands, eyes, surfaces) to rub
   Dete tare oči jer mu se spava. — The child is rubbing his eyes because he's sleepy.
   Stalno tareš ruke, da li ti je hladno? — You keep rubbing your hands — are you cold?
2. (dishes, floors, surfaces) to scrub; to scour
   Baka je dugo trla zagoreli lonac. — Grandma spent a long time scrubbing the burnt pot.

In everyday speech trljati is more common.