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general::
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).
Oxford Collocations Dictionary