montagnard
noun
mon·ta·gnard ˌmōⁿ-ˌtän-ˈyär(d) 
often capitalized
: a member of any of various peoples inhabiting the highlands of central and southern Vietnam
montagnard adjective often capitalized
Word History
Etymology
borrowed from French, "inhabitant of the mountains," going back to Middle French, from montaigne mountain + -ard -ard
First Known Use
1961, in the meaning defined above