(1):
(v. i.) To relinquish or renounce a throne, or other high office or dignity.
(2):
(v. t.) To surrender or relinquish, as sovereign power; to withdraw definitely from filling or exercising, as a high office, station, dignity; as, to abdicate the throne, the crown, the papacy.
(3):
(v. t.) To renounce; to relinquish; - said of authority, a trust, duty, right, etc.
(4):
(v. t.) To reject; to cast off.
(5):
(v. t.) To disclaim and expel from the family, as a father his child; to disown; to disinherit.