Show (a film) (6)
I believe the answer is:
screen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">show a film</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for screen that I've seen before include "Light partition providing shelter, concealment etc" , "See 13" , "Movable partition - cinema" , "Sort out" , "Partition; monitor" .)