ˌFirst World ˈWar BrE AmE noun
the First World War the big war fought in Europe between 1914 and 1918, which involved many different countries SYN World War I
ˌFirst World ˈWar BrE AmE noun
the First World War the big war fought in Europe between 1914 and 1918, which involved many different countries SYN World War I
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012