(1):
(v. i.) The act of coming together; the state of being together; union; coalition.
(2):
(v. i.) An extraordinary assembly of the parkiament or estates of the realm, held without the king's writ, - as the assembly which restored Charles II. to the throne, and that which declared the throne to be abdicated by James II.
(3):
(v. i.) General agreement or concurrence; arbitrary custom; usage; conventionality.
(4):
(v. i.) A meeting or an assembly of persons, esp. of delegates or representatives, to accomplish some specific object, - civil, social, political, or ecclesiastical.
(5):
(v. i.) An agreement or contract less formal than, or preliminary to, a treaty; an informal compact, as between commanders of armies in respect to suspension of hostilities, or between states; also, a formal agreement between governments or sovereign powers; as, a postal convention between two governments.