Homer's ancient Greek epic (5)
I believe the answer is:
iliad
'homer's ancient greek epic' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for iliad that I've seen before include "Homer Trojan war epic" , "Greek epic poem about the Trojan War" , "City investment story" , "tale of woes" , "Work by Homer" .)