Definition of New Year’s Eve noun from the Oxford Advanced Learner's Dictionary

 

New Year’s Eve

 noun
noun
BrE
 
; NAmE
 
(North American English also New Year’s)[uncountable]
 
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31 December, especially the evening of that day They celebrate New Year’s Eve with parties and fireworks. They had a party on New Year’s Eve.
See the Oxford Advanced American Dictionary entry: New Year’s Eve