Definitions for war

(the waging of armed conflict against an enemy; "thousands of people were killed in the war")

(a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply; "war was declared in November but actual fighting did not begin until the following spring")

(an active struggle between competing entities; "a price war"; "a war of wits"; "diplomatic warfare")

(a concerted campaign to end something that is injurious; "the war on poverty"; "the war against crime")

(make or wage war)