Old works inspected daily but not completely (4)
I believe the answer is:
edda
'old works' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'inspected daily but not completely' is the wordplay.
'not completely' indicates the answer is hidden within the clue.
'EDDA' can be found hidden inside 'inspected daily but'.
Can you help me to learn more?
(Other definitions for edda that I've seen before include "Foreign literature" , "Old Scandinavian book of poetry, etc" , "Nordic verses" , "Norse story" , "Icelandic myth collection" .)