Permit for a girl to go to South Africa? (4)
I believe the answer is:
visa
'permit' is the definition.
(I've seen this before)
'a girl to go to south africa?' is the wordplay.
'a girl' becomes 'vi' (short for Violet).
'to go to' is a charade indicator (letters next to each other).
'south africa?' becomes 'sa' (abbreviation).
'vi'+'sa'='VISA'
'for' is the link.
(Other definitions for visa that I've seen before include "Travel permit stamped in passport etc" , "Endorsement made in a passport" , "travel authority" , "Addition to passport" , "Travel warrant" .)