Central African river (4)
'central african river' is the definition.
(I've seen this in another clue)
This is the entire clue.
'central african river' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for congo that I've seen before include "Africa's second longest river" , "African river/republic" , "Major central African river" , "African river (aka Zaire)" , "Africa country and river" .)