Added 9 October 2026 cyrus noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. More about cyrus at Wordnik → Where our words come from → Persian prince who was defeated in battle by his brother Artaxerxes II (424-401 BC). Related Words: movesiriusbeckcirosiruskingmonarchsovereignruleremperorshahshahanshah Back to today's word