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New Year's Day

noun
  1. January 1, celebrated as a holiday in many countries.

Origin of New Year's Day

Middle English word dating back to 1150–1200
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for new year's day

New Year's Day

noun
  1. Jan 1, celebrated as a holiday in many countriesOften (US and Canadian informal) shortened to: New Year's
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012