<p><strong>Noun</strong></p><ul><li>a period of 1,000 years</li><li>the year 2000, or the turn of the 21st century</li><li>the period of 1,000 years during which Christ will reign on earth, as interpreted in the book of Revelation</li><li>a period of general righteousness and happiness, especially in the indefinite future</li><li>a thousandth anniversary</li></ul>