Mapuche
noun
Ma·pu·che mə-ˈpü-chē 
plural Mapuche or Mapuches
1
: an American Indian people of southern Chile
also : a member of this people
2
: the Araucanian language of the Mapuche
Word History
Etymology
Mapuche mapuče, a self-designation, from mapu land + če people
First Known Use
1855, in the meaning defined at sense 1