Actor Elba (5)
I believe the answer is:
idris
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">actor elba</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 idris that I've seen before include "Welshman" , "Last king of Libya" , "Legendary Welsh giant" .)