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birthday
Your birthday is defined as the day on which you are born, or the annual anniversary of that day.
(noun)If you were born on July 1, then July 1 is an example of your birthday.
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See birthday in Webster's New World College Dictionary
noun
- the day of a person's birth or a thing's beginning
- the anniversary of this day
See birthday in American Heritage Dictionary 4
noun
- The day of one's birth.
- The anniversary of one's birth.
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