/ Dictionary / Index O Omaha: Meaning and Definition of Find definitions for: O•ma•ha Pronunciation: (ō'mu-hô", -hä"), [key] — pl. -has, -ha a city in E Nebraska, on the Missouri River. 311,681. a member of a North American Indian people of northeastern Nebraska. the Siouan language of the Omaha, mutually intelligible with Ponca. the World War II Allied code name for one of the five D-Day invasion beaches on France's Normandy coast, attacked by American troops. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: omaha (Thesaurus) OMA Oman Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language