'Birthday' definitions:

Definition of 'birthday'

From: WordNet
noun
An anniversary of the day on which a person was born (or the celebration of it)
noun
The date on which a person was born [syn: birthday, natal day]

Definition of 'Birthday'

From: GCIDE
  • Birthday \Birth"day`\ (b[~e]rth"d[=a]`), n.
  • 1. The day in which any person is born; day of origin or commencement. [1913 Webster]
  • Those barbarous ages past, succeeded next The birthday of invention. --Cowper. [1913 Webster]
  • 2. The day of the month in which a person was born, in whatever succeeding year it may recur; the anniversary of one's birth. [1913 Webster]
  • This is my birthday; as this very day Was Cassius born. --Shak. [1913 Webster]

Definition of 'Birthday'

From: GCIDE
  • Birthday \Birth"day`\, a. Of or pertaining to the day of birth, or its anniversary; as, birthday gifts or festivities. [1913 Webster]

Definition of 'Birthday'

From: Easton
  • Birth-day The observance of birth-days was common in early times (Job 1:4, 13, 18). They were specially celebrated in the land of Egypt (Gen. 40:20). There is no recorded instance in Scripture of the celebration of birth-days among the Jews. On the occasion of Herod's birth-day John the Baptist was beheaded (Matt. 14:6).