Inspired Dante pens literary collection (4)
I believe the answer is:
'literary collection' is the definition.
(ancient collection of Old Norse writing)
'inspired dante pens' is the wordplay.
'pens' says the answer is hidden in the clue (pen can mean to contain or cage).
'EDDA' is hidden in the letters of 'inspired dante'.
(Other definitions for edda that I've seen before include "Collection of Old Norse poetry" , "Old Scandinavian book of poetry, etc" , "Old tales" , "Scandinavian books of myths" , "mythic florilegia" .)