Cad·do /ˈkæ(ˌ)do/
  Caddo
       n 1: a group of Plains Indians formerly living in what is now
            North and South Dakota and Nebraska and Kansas and
            Arkansas and Louisiana and Oklahoma and Texas
       2: a family of North American Indian languages spoken widely in
          the midwest by Caddo peoples [syn: Caddoan, Caddoan
          language]