South African currency (4)
I believe the answer is:
rand
'south african currency' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rand that I've seen before include "Foreign currency" , "Currency of South Africa" , "our 1/4 Across [GOLD MEDALLIST] in 1964" , "Unit of money in South Africa" , "Overseas money" .)