birthday

[ burth-dey ]
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noun
  1. the anniversary of a birth.

  2. the day of a person's birth.

  1. a day marking or commemorating the origin, founding, or beginning of something.

  2. the festivities or celebration marking such a day or anniversary.

Origin of birthday

1
Middle English word dating back to 1350–1400; see origin at birth, day

Words Nearby birthday

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use birthday in a sentence

British Dictionary definitions for birthday

birthday

/ (ˈbɜːθˌdeɪ) /


noun
    • an anniversary of the day of one's birth

    • (as modifier): birthday present

  1. the day on which a person was born

  1. 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