1. Jump, leap, vault imply propelling oneself by a muscular effort, either into the air or from one position or place to another. Jump and leap are often used interchangeably, but jump indicates more particularly the springing movement of the feet in leaving the ground or support: to jump up and down. Leap (which formerly also meant to run) indicates the passage, by a springing movement of the legs, from one point or position to another: to leap across a brook. Vault implies leaping, especially with the aid of the hands or some instrument, over or upon something: to vault ( over ) a fence.

Did you mean jump on?