big league - definition and synonyms

noun
  1.   From our crowdsourced Open Dictionary
    1
    a group of teams that compete at the highest level, especially in baseball

    He made his big league debut for the New York Mets in 1982.

    Submitted from United Kingdom on 31/10/2016
  2.   From our crowdsourced Open Dictionary
    2
    the most successful and important section of an activity

    From small beginnings the restaurant chain has been catapulted into the big league.

    You're playing in the big league now.

    Submitted from United Kingdom on 31/10/2016