oga UK /ˈəʊ.ɡə/US /ˈoʊ.ɡə/ noun1 •A chief, employer, or superior.Nigeria is not a nation of sandwich-eating people and his last oga did not eat bread in the afternoon. — 2013 formsogas
Oga noun1 •Ellipsis of Oga Quasi-National Park: a park in Oga City, Oga Peninsula, Akita Prefecture, Honshu, Japan.