Double Jump

The term Double jump refers to the ability to jump again while in the air. Usually it means just a regular jump, but with no ground. Some times double jumps are different than normal jumps, such as Knuckles's glide, Tails's flying ability or Samus Aran's Screw Attack. Basically this refers to pressing the jump button a second time before landing but most of the time it is required for the player to hit the jump button, the second time, before the apex or maximum height of the jump is met. The Double Jump is also considered as a original move in video games.