Proper noun
Tshiluba
A Bantu language spoken by about 6.3 million people in the Kasaï Occidental and Kasaï Oriental provinces of the Democratic Republic of the Congo.
In a few cases prefixes are used to distinguish languages with the same root in their name, such as Tshiluba and Kiluba (both Luba), Umbundu and Kimbundu (both Mbundu). Source: Internet
Given these limits, French might have lost its place to another of the leading languages of Zaïre – Lingala, Tshiluba, or Swahili – except that teaching of these languages also suffered from limitations on its growth. Source: Internet
It is derived from a Tshiluba language term kivili-chimpenze, with a meaning of "mockman" or possibly just "ape". Source: Internet