Largest of the Greek islands (5)
I believe the answer is:
crete
'largest of the greek islands' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for crete that I've seen before include "Mediterranean island with Minoan remains" , "Island Germans took, 1941" , "Greek territory" , "Large Greek island" , "Erect (anag) - Mediterranean island" .)