Actor Idris (4)
I believe the answer is:
elba
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">actor idris</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for elba that I've seen before include "''Able was I ere I saw . . . .'' (4)" , "place for Napoleon" , "Napoleon prison isle" , "Napoleon's Mediterranean exile island" , "Where emperor was confined" .)