What does the lacrosse abbreviation NLL mean?

The abbreviation NLL signifies National Lacrosse League and is the name of the professional indoor lacrosse league in North America. However, the League was the Major Indoor Lacrosse League (MILL) until 1997. Because lacrosse is much bigger in America than in Germany, they have a more extensive structure, so we want to explain to you the principles, the history and the basic facts about the NLL.