Aegean peninsula (6)
I believe the answer is:
attica
'aegean peninsula' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for attica that I've seen before include "Territory of Athens in ancient Greece" , "Greek region that includes Athens" , "Greek department - New York prison" , "Correctional Facility in New York" , "Region of Greece around the capital" .)