"The Wire" actor Idris (4)
I believe the answer is:
elba
'the wire actor idris' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elba that I've seen before include "Island of Napoleon's exile in 1814-15" , "Island off Italy" , "Napoleonic prison" , "Exile isle for Napoleon" , "Abel (anag)" .)