the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
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" - barrage fire
the rapid and continuous delivery of linguistic communication (spoken or written) "a barrage of questions" "a bombardment of mail complaining about his mistake"