South African boys (5)
I believe the answer is:
natal
'south' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for natal that I've seen before include "Pertaining to birth" , "South African place" , "South African region" , "Like a birthday" , "Relating to deliveries" .)