NOUN (2)

1. advancing as if in the child's game, by leaping over obstacles or competitors;
- Example: "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;


VERB (2)

1. jump across;
- Example: "He leapfrogged his classmates"

2. progress by large jumps instead of small increments;

The Collaborative International Dictionary of English v.0.48:

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]

WordNet (r) 3.0 (2006):

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

Moby Thesaurus II by Grady Ward, 1.0:

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