Source : Webster's Revised Unabridged Dictionary (1913)

Pound \Pound\, v. t. [imp. & p. p. {Pounded}; p. pr. & vb. n.
   {Pounding}.] [OE. pounen, AS. punian to bruise. Cf. {Pun} a
   play on words.]
   1. To strike repeatedly with some heavy instrument; to beat.

            With cruel blows she pounds her blubbered cheeks.
                                                  --Dryden.

   2. To comminute and pulverize by beating; to bruise or break
      into fine particles with a pestle or other heavy
      instrument; as, to pound spice or salt.

Pounding \Pound"ing\, n.
   1. The act of beating, bruising, or breaking up; a beating.

   2. A pounded or pulverized substance. [R.] ``Covered with the
      poundings of these rocks.'' --J. S. Blackie.

Source : WordNet®

pounding
     n 1: repeated heavy blows [syn: {buffeting}]
     2: an instance of rapid strong pulsation (of the heart); "he
        felt a throbbing in his head" [syn: {throb}, {throbbing}]
     3: the act of pounding (delivering repeated heavy blows); "the
        sudden hammer of fists caught him off guard"; "the
        pounding of feet on the hallway" [syn: {hammer}, {pound},
        {hammering}]