<p><strong>Noun</strong></p><ul><li>The laying down of one's cards, face upward, in a card game, especially poker.</li><li>A conclusive settlement of an issue, difference, etc., in which all resources, power, or the like, are used; decisive confrontation: An international showdown was inevitable.</li></ul><p><strong>Synonyms</strong></p><ul><li>Clash</li><li>Encounter</li><li>Climax</li><li>Crisis</li></ul>