Exile site of 1814 (4)
I believe the answer is:
elba
'exile site of 1814' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elba that I've seen before include "part of Tuscany?" , "Abel (anag)" , "''Able was I ere I saw . . . .'' (4)" , "Napoleon's plaint: 'Able was I ere I saw . . . .'" , "Exile isle for Napoleon" .)