Source : Webster's Revised Unabridged Dictionary (1913)

Rebound \Re*bound"\, v. i. [Pref. re- + bound: cf. F. rebondir.]
   1. To spring back; to start back; to be sent back or
      reverberated by elastic force on collision with another
      body; as, a rebounding echo.

            Bodies which are absolutely hard, or so soft as to
            be void of elasticity, will not rebound from one
            another.                              --Sir I.
                                                  Newton.

   2. To give back an echo. [R.] --T. Warton.

   3. To bound again or repeatedly, as a horse. --Pope.

   {Rebounding lock} (Firearms), one in which the hammer
      rebounds to half cock after striking the cap or primer.

Rebound \Re*bound"\, v. t.
   To send back; to reverberate.

         Silenus sung; the vales his voice rebound. --Dryden.

Rebound \Re*bound"\, n.
   The act of rebounding; resilience.

         Flew . . . back, as from a rock, with swift rebound.
                                                  --Dryden.

Source : WordNet®

rebound
     n 1: a movement back from an impact [syn: {recoil}, {repercussion},
           {backlash}]
     2: a reaction to a crisis or setback or frustration; "he is
        still on the rebound from his wife's death"
     3: the act of securing possession of the rebounding basketball
        after a missed shot

rebound
     v 1: spring back; spring away from an impact; "The rubber ball
          bounced"; "These particles do not resile but they unite
          after they collide" [syn: {bounce}, {resile}, {take a
          hop}, {spring}, {bound}, {recoil}, {reverberate}, {ricochet}]
     2: return to a former condition; "The jilted lover soon rallied
        and found new friends"; "The stock market rallied" [syn: {rally}]