Bale out of the Mediterranean island (4)
I believe the answer is:
elba
'bale out of the mediterranean island' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for elba that I've seen before include "Island where Napoleon was exiled" , "Island of imperial exile" , "place for Napoleon" , "Napoleon exile island" , "Island of Napoleon's first exile" .)