What is the meaning of Nagana?

A disease of vertebrates in southern Africa, characterised by swelling and lethargy and caused by trypanosomes transmitted by tsetse flies.

nagana (sleeping disease occurring in animals)

nagana or n'gana (cattle disease caused by Trypanosoma brucei via tse-tse fly)

to think

reprimand

genitive singular of nagan

Source: wiktionary.org