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English definition of “war”

war

noun [C or U] uk   /wɔːr/ us    /wɔːr/
A2 armed fighting between two or more countries or groups, or a particular example of this: nuclear war a war film/grave/hero/poet If this country goes to (= starts to fight in a) war we will have to face the fact that many people will die. Britain and France declared war on Germany in 1939 as a result of the invasion of Poland. War broke out between the two countries after a border dispute. They've been at war for the last five years. He died in the First World War/the Vietnam war. war of attrition a war that is fought over a long period and only ends when one side has neither the soldiers and equipment nor the determination left to continue fighting war of nerves a situation, often before a competition or battle, in which each opposing side attempts to frighten or discourage the other by making threats or by showing how strong it is C2 any situation in which there is strong competition between opposing sides or a great fight against something harmful: The past few months have witnessed a price war between leading supermarkets. The government are to step up their attempt to wage war against/on drugs.
(Definition of war from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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