Garret, loft (5)
I believe the answer is:
attic
I believe this clue is a double definition.
'garret' is the first definition.
(synonyms)
'loft' is the second definition.
(synonyms)
(Other definitions for attic that I've seen before include "28 [GREEK]" , "Dusty room" , "The highest room" , "Classical" , "Room inside a building's roof space" .)