Source : Webster's Revised Unabridged Dictionary (1913)

Seminoles \Sem"i*noles\, n. pl.; sing. {Seminole}. (Ethnol.)
   A tribe of Indians who formerly occupied Florida, where some
   of them still remain. They belonged to the Creek
   Confideration.

Source : WordNet®

Seminole
     n 1: a member of the Muskhogean people who moved into Florida in
          the 18th century
     2: the Muskhogean language of the Seminole people