Heroic; narrative poem (4)
I believe the answer is:
epic
I believe this is a double definition.
'heroic' is the first definition.
(I know that heroic can be written as epic)
'narrative poem' is the second definition.
(I've seen this before)
(Other definitions for epic that I've seen before include "Long account" , "Long poem telling of heroic events" , "Impressive scope" , "Impressively great" , "Long classic film" .)