major league

1. Either of the two principal groups of professional baseball teams in the United States.
2. A league of principal importance in other professional sports, such as basketball, football, or ice hockey.

(māˈjər-lēgˈ)

1. Sports Of or relating to a major league: major-league baseball.
2. Informal Prominent or important: a major-league ballet company; a major-league decision.
3. Informal Impressive, as in extent or quantity: “a destination for major-league wooing” (Bryan Miller).