Horsed around on the Greek island (6)
I believe the answer is:
rhodes
'horsed around on the greek island' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for rhodes that I've seen before include "Greek island - British-born South African statesman" , "Hordes go to the Greek island" , "Shored (anag) - Greek island" , "British financier and coloniser in southern Africa, d. 1902" , "She and Rod have a Greek holiday here" .)