bombardment

the rapid and continuous delivery of linguistic communication (spoken or written); "a barrage of questions"; "a bombardment of mail complaining about his mistake"

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"

the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)

an attack by dropping bombs