1. Sports.See major league.
2. Often, big leagues. Informal.the area of greatest competition, highest achievement or rewards, etc.: He's a local politician who isn't ready for the big league.
Pronunciation: (big'lēg'), [key]
1. Sports.of or belonging to a major league: a big-league pitcher.
2. Informal.among the largest, foremost, etc., of its kind: the big-league steel companies.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.