Added 10 October 2026 omaha noun Categories: PeoplePlacesRare Words noun ! Definition from WordNet 3.1, Princeton University. More about omaha at Wordnik → Where our words come from → A member of the Siouan people formerly living in the Missouri river valley in northeastern Nebraska. Largest city in Nebraska; located in eastern Nebraska on the Missouri river; a major transportation center of the Midwest. The Dhegiha dialect spoken by the Omaha. Related Words: mahachicagocrowo8omawhawkiowaoklahannalisiouxiowaponca Back to today's word