Dhegiha UK /ˈdeɪ̯ɡiːˌhɒ/US /ˈdeɪ̯ɡiˌhɑ/ noun1 •A member of a number of possibly related Siouan tribes: the Omaha, Ponca, Kaw or Kansa, Osage, and Quapaw. formsDhegihas