League n.
 1. An alliance or combination of two or more nations, parties, organizations, or persons, for the accomplishment of a purpose which requires a continued course of action, as for mutual defense, or for furtherance of commercial, religious, or political interests, etc.
 And let there be
 'Twixt us and them no league, nor amity.   --Denham.
 Note: ☞ A league may be offensive or defensive, or both; offensive, when the parties agree to unite in attacking a common enemy; defensive, when they agree to a mutual defense of each other against an enemy.
 The Holy League, an alliance of Roman Catholics formed in 1576 by influence of the Duke of Guise for the exclusion of Protestants from the throne of France.
 Solemn League and Covenant. See Covenant,2.
 The land league, an association, organized in Dublin in 1879, to promote the interests of the Irish tenantry, its avowed objects being to secure fixity of tenure, fair rent, and free sale of the tenants' interest.  It was declared illegal by Parliament, but vigorous prosecutions have failed to suppress it.
 Syn: -- Alliance; confederacy; confederation; coalition; combination; compact; cooperation.