[leap.frog] n (1599): a game in which one player bends down and is vaulted over by another player
[2]leapfrog vb leap.frogged ; leap.frog.ging vi (1872): to leap or progress in or as if in leapfrog ~ vt 1: to go ahead of (each other) in turn; specif: to advance (two military units) by keeping one unit in action while moving the other unit past it to a position farther in front
2: to evade by or as if by a bypass