<p><strong>Noun</strong></p><ul><li>Fortification.</li><li>a projecting portion of a rampart or fortification that forms an irregular pentagon attached at the base to the main work.</li><li>a fortified place.</li><li>Synonyms: citadel, stronghold, bulwark, fort, fortress.</li><li>anything seen as preserving or protecting some quality, condition, etc.: a bastion of solitude; a bastion of democracy.</li></ul>