preskakati

1. to jump over
   Deca preskaču lokve na putu do škole. — The kids jump over puddles on the way to school.
   Konj lako preskače prepone. — The horse easily jumps the hurdles.
2. to skip
   Često preskačem doručak kad žurim. — I often skip breakfast when I'm in a hurry.
   On stalno preskače časove. — He keeps skipping classes.
3. (of the heart) to skip a beat
   Srce mi preskače od uzbuđenja. — My heart skips a beat with excitement.

The perfective is preskočiti; a direct object without a preposition is possible: preskakati ogradu = to jump over the fence.