Stage-player (5)
I believe the answer is:
actor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stage-player</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for actor that I've seen before include "One in a play" , "eg Anthony Hopkins" , "Gielgud, say" , "Thesp" , "Dramatic artist" .)