LEAGUE

league. 1. A covenant made by nations, groups, or individuals for promoting common interests or ensuring mutual protection. 2. An alliance or association of nations, groups, or individuals formed by such a covenant. 3. A unit of distance, usu. measuring about three miles (chiefly, nautical). [Cases: Weights and Measures  3. C.J.S. Weights and Measures § 3.]

marine league.A geographical measure of distance equal to one-twentieth part of a degree of latitude, or three nautical miles. [Cases: Weights and Measures  3. C.J.S. Weights and Measures § 3.]

[Blacks Law 8th]