The south of France (4)
I believe the answer is:
midi
'the south of france' is the definition.
('Le Midi' is a French term for the south of France)
This is all the clue.
(Other definitions for midi that I've seen before include "Southern part of France" , "Female attire" , "Le ..., the south of France" , "Calf-length dress" , "Medium-sized" .)