leapfrog

leapfrog
    n 1: advancing as if in the child's game, by leaping over
         obstacles or competitors; "the company still believes the
         chip is a leapfrog in integration and will pay huge
         dividends"
    2: a game in which one child bends down and another leaps over
    v 1: jump across; "He leapfrogged his classmates"
    2: progress by large jumps instead of small increments
    

Leapfrog \Leap"frog`\, n.
   A play among boys, in which one stoops down and another leaps
   over him by placing his hands on the shoulders of the former.
   [1913 Webster]
    

32 Moby Thesaurus words for "leapfrog":
      bounce, bound, buck, buckjump, capriole, clear, curvet,
      hippety-hop, hop, hurdle, jump, jump over, leap, leap over,
      negotiate, overjump, overleap, overskip, pounce, pounce on,
      pounce upon, ski jump, skip, spring, start, start aside, start up,
      steeplechase, updive, upleap, upspring, vault