Historical master; sir: respectful term of address used in parts of Africa
Origin of bwanaSwahili from Arabic ab?na, our father from ab?, father
Used as a form of respectful address in parts of Africa.
Origin of bwanaSwahili from Arabic 'abūnā our father 'abū bound form of 'ab father ℵb -nā our
From Swahili bwana (“master”).