OMAHA Meaning of OMAHA in English [ 'əʊməhα: ]■ noun ( plural same or ~s ) 1》 a member of an American Indian people of NE Nebraska. 2》 the Siouan language of the ~.Originfrom ~ umonhon 'upstream people'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004