1. [n]  the act of securing possession of the rebounding basketball after a missed shot
2. [n]  a reaction to a crisis or setback or frustration; "he is still on the rebound from his wife's death"
3. [n]  a movement back from an impact
4. [v]  return to a former condition; "The jilted lover soon rallied and found new friends"; "The stock market rallied"
5. [v]  spring back; spring away from an impact; "The rubber ball bounced"; "These particles do not resile but they unite after they collide"

Rebound
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1. \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.
   

2. \Re*bound"\, v. t.
   To send back; to reverberate.
         Silenus sung; the vales his voice rebound. --Dryden.
   

3. \Re*bound"\, n.
   The act of rebounding; resilience.
         Flew . . . back, as from a rock, with swift rebound.
                                                  --Dryden.
   

1. In diabetes, A sudden swing from a low blood glucose level to a high one.
2. Pain occuring when the examiner suddenly releases pressure of the examining hand, allowing locally inflamed tissues to return suddenly to their normal position.