world war noun
plural ∼ wars : a war involving many nations of the world [count] ▪ the First World War = World War I [=the war that was fought mainly in Europe from 1914 to 1918] ▪ the Second World War = World War II [=the war that was fought mainly in Europe and Asia from 1939 to 1945] ▪ He fought in both World Wars. [noncount] ▪ The nations were prepared for world war.
