Parole
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In military law. A promise given by a prisoner of war, when he bas leave to depart from custody, that he will return at the time appointed, unless discharged.
Webster.
An engagement by a prisoner of war, upon being set at liberty, that he will not again take up arms against the government by whose forces he was captured, either for a limited period or while hostilities continue.