Source : Webster's Revised Unabridged Dictionary (1913)

Bounce \Bounce\, v. i. [imp. & p. p. {Bounced}; p. pr. & vb. n.
   {Bouncing}.] [OE. bunsen; cf. D. bonzen to strike, bounce,
   bons blow, LG. bunsen to knock; all prob. of imitative
   origin.]
   1. To strike or thump, so as to rebound, or to make a sudden
      noise; a knock loudly.

            Another bounces as hard as he can knock. --Swift.

            Against his bosom bounced his heaving heart.
                                                  --Dryden.

   2. To leap or spring suddenly or unceremoniously; to bound;
      as, she bounced into the room.

            Out bounced the mastiff.              --Swift.

            Bounced off his arm+chair.            --Thackeray.

   3. To boast; to talk big; to bluster. [Obs.]

Bouncing \Boun"cing\, a.
   1. Stout; plump and healthy; lusty; buxom.

            Many tall and bouncing young ladies.  --Thackeray.

   2. Excessive; big. ``A bouncing reckoning.'' --B. & Fl.

   {Bouncing Bet} (Bot.), the common soapwort ({Saponaria
      officinalis}). --Harper's Mag.

Source : WordNet®

bouncing
     n : rebounding from an impact (or series of impacts) [syn: {bounce}]

bouncing
     adj 1: vigorously healthy; "a bouncing baby"
     2: marked by lively action; "a bouncing gait"; "bouncy tunes";
        "the peppy and interesting talk"; "a spirited dance" [syn:
         {bouncy}, {peppy}, {spirited}, {zippy}]