Range limited by African desert (5)
I believe the answer is:
andes
'range' is the definition.
(South American mountain range)
'limited by african desert' is the wordplay.
'limited by' says the answer is hidden in the clue (the clue contains or limits the answer).
'ANDES' is hidden within 'african desert'.
(Other definitions for andes that I've seen before include "Peak District" , "Aconcagua the highest in this range" , "Mounts" , "danes found in mountains" , "Great S American mountains" .)