The Collaborative International Dictionary of English v.0.48:

Leap \Leap\ (l[=e]p), v. i. [imp. & p. p. Leaped (l[=e]pt;
   277), rarely Leapt (l[=e]pt or l[e^]pt); p. pr. & vb. n.
   Leaping.] [OE. lepen, leapen, AS. hle['a]pan to leap, jump,
   run; akin to OS. [=a]hl[=o]pan, OFries. hlapa, D. loopen, G.
   laufen, OHG. louffan, hlauffan, Icel. hlaupa, Sw. l["o]pa,
   Dan. l["o]be, Goth. ushlaupan. Cf. Elope, Lope,
   Lapwing, Loaf to loiter.]
   1. To spring clear of the ground, with the feet; to jump; to
      vault; as, a man leaps over a fence, or leaps upon a
      horse. --Bacon.
      [1913 Webster]

            Leap in with me into this angry flood. --Shak.
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   2. To spring or move suddenly, as by a jump or by jumps; to
      bound; to move swiftly. Also Fig.
      [1913 Webster]

            My heart leaps up when I behold
            A rainbow in the sky.                 --Wordsworth.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Leaping \Leap"ing\, a. & n.
   from Leap, to jump.
   [1913 Webster]

   Leaping house, a brothel. [Obs.] --Shak.

   Leaping pole, a pole used in some games of leaping.

   Leaping spider (Zool.), a jumping spider; one of the
      Saltigrad[ae].
      [1913 Webster]

WordNet (r) 3.0 (2006):

leaping
    n 1: a light, self-propelled movement upwards or forwards [syn:
         leap, leaping, spring, saltation, bound,
         bounce]