Crossword Genius

Do work in part of Africa (5)

Ross

I believe the answer is:

congo

'part of africa' is the definition.
('Congo' is part of 'africa')

'do work' is the wordplay.
'do' becomes 'con'.
'work' becomes 'go' (synonyms).
'con'+'go'='CONGO'

'in' is the link.

(Other definitions for congo that I've seen before include "Crazily entertaining" , "African river flowing into the South Atlantic" , "African river also called Zaire" , "Central African region" , "Former name of Zaire" .)

I've seen this clue in The Guardian.
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