cannon noun

ADJ. water Riot police used water cannon and tear gas to disperse the crowd.

VERB + CANNON load | aim | fire, shoot

CANNON + VERB boom, roar, thunder Cannons thundered to their right. | fire (sth) As the king stepped ashore the cannons fired a salute.

CANNON + NOUN ball, shell | fire, shot | crew | fodder (figurative) The foot soldiers were just used as cannon fodder (= considered not as people but as material to be used up in war).