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birthday

[ burth-dey ]
/ ˈbɜrθˌdeɪ /
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noun
the anniversary of a birth.
the day of a person's birth.
a day marking or commemorating the origin, founding, or beginning of something.
the festivities or celebration marking such a day or anniversary.
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Origin of birthday

Middle English word dating back to 1350–1400; see origin at birth, day
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use birthday in a sentence

British Dictionary definitions for birthday

birthday
/ (ˈbɜːθˌdeɪ) /

noun
  1. an anniversary of the day of one's birth
  2. (as modifier)birthday present
the day on which a person was born
any anniversary
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
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