Long, narrative poem (4)
I believe the answer is:
epic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">long narrative poem</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for epic that I've seen before include "Impressive scope" , "On a grand scale, like heroic poem" , "Long literary work about great events" , "Long poem - awesome!" , "Blown up" .)