Yule like Yue, reportedly? (4)
I believe the answer is:
noel
'yule' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for noel that I've seen before include "Christmas carol" , "Sir - - Coward" , "namely 4 [COWARD]" , "Coward who wrote and acted, d. 1973" , "seasonal festival" .)