Source : Webster's Revised Unabridged Dictionary (1913)

Bombardment \Bom*bard"ment\, n. [F. bombardement.]
   An attack upon a fortress or fortified town, with shells, hot
   shot, rockets, etc.; the act of throwing bombs and shot into
   a town or fortified place.

Source : WordNet®

bombardment
     n 1: the act (or an instance) of subjecting a body or substance
          to the impact of high-energy particles (as electrons or
          alpha rays)
     2: the heavy fire of artillery to saturate an area rather than
        hit a specific target; "they laid down a barrage in front
        of the advancing troops"; "the shelling went on for hours
        without pausing" [syn: {barrage}, {barrage fire}, {battery},
         {shelling}]
     3: an attack by dropping bombs [syn: {bombing}]