Walkover: A non-airborne tumbling skill where the athlete leans forward to a handstand and brings the legs over and back down to the floor one at a time (front walkover) or by stretching through the upper back, going backwards, similar to a handstand and lands on the feet one at a time (back walkover) with support of one or both hands.
(The definitions used in the videos are outdated, but the examples shown in the videos remain useful.)