Pāss'pōrt, n.

n. [Fr. passeport, originally a permission to leave a port or to sail into it, from passer, to pass, and port, a port, harbor; It. passaporto, Sp. pasaporte.]

1. A document carried by neutral merchant vessels in time of war to certify their nationality, and protect them from belligerents; a sea-letter; also, a document given by the competent officer of a state, which permits the person therein named to pass or travel from place to place by land or water.
2. A license granted in time of war for the removal of persons and effects from a hostile country; a safe-conduct. Burrill. Brande.
3. A license for importing or exporting contraband goods or movables without paying the usual duties.
4. Hence, that which enables one to pass with safety, certainty, or general acceptance.

His passport is his innocence and grace. Dryden.