The Difinition of the Word War

     According to Dictionary Reference the word "war" has several meanings:
1. "a conflict carried on by force of arms, as between nations or between parties within a nation; warfare, as by land, sea, or air."
2. "active hostility or contention; conflict; contest."
3. "a struggle." 
     In Merriam Webster the word war defined as a warfare or "an activity undertaken by a political unit (as a nation) to weaken or destroy another."