Old Icelandic literary work (4)
I believe the answer is:
edda
'old icelandic literary work' 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 "Norse story" , "Norse saga" , "anthology" , "Old Scandinavian book of poetry, etc" , "work in Scandinavia" .)