Icelandic poetry collection (4)
I believe the answer is:
edda
'icelandic poetry collection' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for edda that I've seen before include "Old tales" , "Norse poem collection" , "Old Scandinavian book of poetry, etc" , "One of the two old Icelandic poetic books" , "Ancient Icelandic writings" .)