The "Iliad," for one (4)
I believe the answer is:
epic
'the iliad for one' is the definition.
(iliad is a kind of epic)
This is all the clue.
(Other definitions for epic that I've seen before include "Heroic narrative verse" , "blockbuster" , "Guardian (body, beast)" , "Heroic; saga" , "Colossal" .)