Garden with forbidden fruit (4)
I believe the answer is:
eden
'garden with forbidden fruit' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eden that I've seen before include "Badly need the garden" , "Genesis location" , "PM 1955-56" , "Tory Prime Minister, 1955-57" , "5,27 [PRIME MINISTER]" .)