Endow new Norse god (5)
I believe the answer is:
woden
'norse god' is the definition.
(I've seen this before)
'endow new' is the wordplay.
'new' indicates anagramming the letters.
'endow' is an anagram of 'WODEN'.
(Other definitions for woden that I've seen before include "Norse god" , "godlike figure" , "Odin" , "Foremost Anglo-Saxon god" .)