KongoPronunciation: /ˈkɒŋgəʊ/Definition of Kongo noun (plural same or Kongos) 1a member of an indigenous people inhabiting the region of the River Congo in west central Africa. 2 [mass noun] Kikongo, the Bantu language of the Kongo. adjective relating to the Kongo or their language. Origin:the name in KikongoKongo in other Oxford dictionaries Definition of Kongo in the US English dictionary