(1):
(v. t.) To separate for a special object or use; - used especially in military language; as, to detach a ship from a fleet, or a company from a regiment.
(2):
(v. i.) To push asunder; to come off or separate from anything; to disengage.
(3):
(v. t.) To part; to separate or disunite; to disengage; - the opposite of attach; as, to detach the coats of a bulbous root from each other; to detach a man from a leader or from a party.