African place to spend a penny whilst seeing wild animals, we hear (4)

I believe the answer is:

zulu

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'african' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for zulu that I've seen before include "Bantu language of south-eastern Africa" , "Communications code for Z" , "Bantu people" , "African warrior under Chaka" , "Bantu language; Z in radio communications" .)

I've seen this clue in The Times.

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