war in WordNet English dictionary

1. 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"
   war  state of war 
   
2. the waging of armed conflict against an enemy
   "thousands of people were killed in the war"
   war  warfare 
   
3. a concerted campaign to end something that is injurious
   "the war on poverty"; "the war against crime"
   war 
   
4. an active struggle between competing entities
   "a price war"; "a war of wits"; "diplomatic warfare"
   war  warfare 
   

1. make or wage war
   war