Fun provided by southern wine (5)
I believe the answer is:
sport
'fun' is the definition.
(I know that fun can be written as sport)
'provided by southern wine' is the wordplay.
'provided by' says to put letters next to each other.
'southern' becomes 's' (abbreviation).
'wine' becomes 'port wine' (port wine is a kind of wine).
's'+'port' is 'SPORT'.
(Other definitions for sport that I've seen before include "Physical activity" , "Games" , "Eg, rugby" , "Physical recreation" , "Game; display" .)