What does "bantu" mean?

Bantu: A member of one of the great family of Negroid tribes occupying equatorial and southern Africa. These tribes include, as important divisions, the Kafirs, Damaras, Bechuanas, and many tribes whose names begin with Aba-, Ama-, Ba-, Ma-, Wa-, variants of the Bantu plural personal prefix Aba-, as in Ba-ntu, or Aba-ntu, itself a combination of this prefix with the syllable -ntu, a person. -- Ban"tu, a.