Leapfrog

v. play leapfrog (children's game); jump over; move forward as in the game of leapfrog

n. children's game which is played by jumping one by one over the backs of kneeling players

For other meanings, see Leapfrogging (disambiguation). Leapfrog is a children's game in which players vault over each other's stooped backs. The first participant rests hands on knees and bends over, this is called giving a back. The next player places hands on the first's back and leaps over by straddling legs wide apart on each side. On landing he stoops down and a third leaps over the first and second, and the fourth over all others successively, etcetera; the number of participants is not fixed.
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Noun
1. advancing as if in the game of leapfrog
(hypernym) progress, progression, procession, advance, advancement, forward motion, onward motion
2. a game in which one child bends down and another leaps over
(hypernym) child's game
Verb
1. jump across; "He leapfrogged his classmates"
(hypernym) jump, leap, bound, spring
2. progress by large jumps instead of small increments
(hypernym) progress, come on, come along, advance, get on, get along, shape up

(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.
  

Form of movement in which like supporting elements are moved successively through or by one another along the axis of movement of supported forces. 1/4/73

Forme de mouvement au cours duquel des éléments (tels que des éléments de soutien) se déplacent suivant un même axe en se rejoignant ou en se dépassant successivement les uns les autres. 1/4/73