Meaning

noun an association of sports teams that organizes matches for its members

noun an association of states or organizations or individuals for common action

noun an obsolete unit of distance of variable length (usually 3 miles)

originFrom Middle English lege (“league”), from Late Latin leuca, leuga (“the Gaulish mile”), from Gaulish, from Proto-Celtic *lougā (compare Middle Breton leau, lew, Breton lev / leo (“league”)). Doublet of legua.

Etymology from Wiktionary, CC BY-SA 3.0