birthday
    n 1: an anniversary of the day on which a person was born (or
         the celebration of it)
    2: the date on which a person was born [syn: birthday, natal
       day]

Birthday \Birth"day`\ (b[~e]rth"d[=a]`), n.
   1. The day in which any person is born; day of origin or
      commencement.
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            Those barbarous ages past, succeeded next
            The birthday of invention.            --Cowper.
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   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.
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            This is my birthday; as this very day
            Was Cassius born.                     --Shak.
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Birthday \Birth"day`\, a.
   Of or pertaining to the day of birth, or its anniversary; as,
   birthday gifts or festivities.
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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).