Big Three

(UK, history) The World War II military alliance consisting of the Soviet Union, the United States, and the United Kingdom.

(UK, history) The leaders of World War II military alliance consisting of the Soviet Union, the United States, and the United Kingdom: Joseph Stalin, Franklin Roosevelt and Winston Churchill.

(US) The three major traditional commercial broadcast television networks in the United States: CBS (the Columbia Broadcasting System), NBC (the National Broadcasting Company), and ABC (the American Broadcasting Company)

(economics) China, Japan, and Korea, three major Asian economies.