(1) An attack by dropping bombs
(2) The act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
(3) 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"
(4) The rapid and continuous delivery of linguistic communication (spoken or written)
"A barrage of questions"
"A bombardment of mail complaining about his mistake"