Source : Webster's Revised Unabridged Dictionary (1913)

Leaper \Leap"er\, n. [AS. hle['a]pere.]
   One who, or that which, leaps.

Leaper \Leap"er\, n. [See 1st {Leap}.]
   A kind of hooked instrument for untwisting old cordage.

Source : WordNet®

leaper
     n : an athlete who bounds or leaps (as in basketball) [syn: {bounder},
          {jumper}]