ammunition
noun [ U ] uk/ˌæm.jəˈnɪʃ.ən/ us/ˌæm.jəˈnɪʃ.ən/
(informal ammo, uk/ˈæm.əʊ/ us/-oʊ/)弹药，军火
objects that can be shot from a weapon, such as bullets or bombs
a good supply of ammunition 充足的弹药供应
a shortage of ammunition 弹药短缺
（指可用来支持自己论点的）信息，事实
facts that can be used to support an argument
His bad behaviour provided plenty of ammunition for his opponents. 他的不良行为给对手提供了足够的把柄。