birthday: Meaning and Definition of

birth•day

Pronunciation: (bûrth'dā"), [key]
— n.
  1. the anniversary of a birth.
  2. the day of a person's birth.
  3. a day marking or commemorating the origin, founding, or beginning of something.
  4. the festivities or celebration marking such a day or anniversary.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: