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.
      [1913 Webster]

   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]

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "leaping":
   anabatic, ascendant, ascending, ascensional, ascensive, beaming,
   beatific, beatified, blessed, blissful, bouncing, bounding,
   capering, cheerful, chirping, climbing, dancing, flushed with joy,
   gay, glad, glowing, happy, hopping, hurdle race, hurdling,
   in the ascendant, joyful, joyous, jumping, laughing, mounting,
   pole vaulting, prancing, purring, radiant, rampant, rearing,
   rising, saltant, saltation, saltatorial, saltatory, scandent,
   scansorial, singing, skipping, skyrocketing, smiling, smirking,
   sparkling, spiraling, springing, starry-eyed, steeplechase,
   the hurdles, thrice happy, timber topping, uparching, upcoming,
   upgoing, upgrade, uphill, uphillward, uprising, upsloping, upward,
   upwith, vaulting