Homer's "Odyssey," for instance (4)
I believe the answer is:
epos
'homer's odyssey for instance' is the definition.
(I know that Odyssey is a epos)
This is all the clue.
(Other definitions for epos that I've seen before include "One has many lines" , "Epic poem; electronic point of sale (abbrev.)" , "Verse" , "Things sold here" , "body of poetry" .)