Luba Syllabification: (Lu·ba)Pronunciation: /ˈlo͞obə/Definition of Luba noun (plural same or Lubas) 1a member of a people living mainly in southeastern Democratic Republic of Congo (formerly Zaire). 2the Bantu language of the Luba. Also called Chiluba. adjective relating to the Luba or their language. Origin:a local nameLuba in other Oxford dictionaries Definition of Luba in the British & World English dictionary