1. To travel over the top of something by leaping or vaulting. He tried to jump over the waist-high wall, but he caught his toe and fell flat on his face. Originally, Superman didn't actually fly—he just jumped over really tall buildings. Weird, huh?
2. To traverse some distance or the breadth of something by jumping or leaping. I told my brother to jump over, but he was too scared that he wouldn't clear the ditch. You'll have to jump over the gap between the two buildings.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
jump over something
to leap over or across something. The fellow named Jack jumped over a candle placed on the floor. Puddles are to be jumped over, not waded through.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.