African relative carrying wood uphill (7)
I believe the answer is:
angolan
'african' is the definition.
(Angolan is an example)
'relative carrying wood uphill' is the wordplay.
'relative' becomes 'nana' (I've seen this before).
'carrying' indicates putting letters inside.
'wood' becomes 'log' (a log is a piece of wood).
'uphill' says the letters should be written in reverse (in a down clue, letters go up).
'nana' going around 'log' is 'nalogna'.
'nalogna' back-to-front is 'ANGOLAN'.
(Other definitions for angolan that I've seen before include "Coming from a southwest African country" , "One from Luanda" , "Eg, native of Luanda" , "from Africa" .)