Meaning 1 ►▼
a baseball player or team that is good, but not the best
Dom DiMaggio played for the San Francisco Seals, a minor league team, before he went to the Boston Red Sox.
Meaning 2 ►▼
a person, business or other entity that is not the most important
The Blue Corporation is a minor league business. Go to the boss; Jerry is a minor league player.
A minor league baseball team plays in small towns and cities. Minor leagues train baseball players for the major leagues.