Passport

Pass·port

Passport

n.
  1. Permission to pass; a document given by the competent officer of a state, permitting the person therein named to pass or travel from place to place, without molestation, by land or by water.
    Caution in granting passports to Ireland.
  2. A document carried by neutral merchant vessels in time of war, to certify their nationality and protect them from belligerents; a sea letter.
  3. A license granted in time of war for the removal of persons and effects from a hostile country; a safe-conduct.
  4. Figuratively: Anything which secures advancement and general acceptance.
    His passport is his innocence and grace.