n.
1.a war between the allies (Russia, France, British Empire, Italy, United States, Japan, Rumania, Serbia, Belgium, Greece, Portugal, Montenegro) and the central powers (Germany, Austria-Hungary, Turkey, Bulgaria) from 1914 to 1918
Idiom of the Day
drown (someone) out or drown out (someone)
to make so much noise that it is impossible to hear someone
The cheering fans drowned out the team captain.