bombard

Concise Oxford English Dictionary © 2008 Oxford University Press:
bombard

▶verb /bɒmˈbɑːd/ 

• 1 attack continuously with bombs or other missiles.

• 2 subject to a continuous flow of questions or information.

• 3 Physics direct a stream of high-speed particles at (a substance).

▶noun /ˈbɒmbɑːd/ an early form of cannon.

– derivatives
bombardment noun.

– origin ME: from OFr. bombarde, prob. based on L. bombus (see bomb).