<p><strong>Noun:</strong></p><ul><li>an official document issued by the government of a country to one of its citizens, authorizing travel to foreign countries and authenticating the bearer's identity, citizenship, right to protection while abroad, and right to reenter their native country.</li><li>anything that ensures admission or acceptance: A good education can be your passport to success.</li><li>any authorization to pass or go somewhere.</li><li>a document issued to a ship, especially to a neutral merchant ship in time of war, granting or requesting permission to proceed without molestation in certain waters.</li><li>a certificate intended to secure admission.</li></ul>