Oromo
noun
Oro·mo ȯ-ˈrō-(ˌ)mō 
ō-
plural Oromos or Oromo
1
: a member of a Cushitic-speaking people of southern Ethiopia and adjacent parts of Kenya
2
: the Cushitic language of the Oromo
Word History
Etymology
Oromo (western dialect) oromoo, a self-designation, probably from obsolete plural of orma person, stranger
First Known Use
1893, in the meaning defined at sense 1