birthday

American  

[burth-dey] / ˈbɜrθˌdeɪ /

noun

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.

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birthday British  

/ ˈbɜːθˌdeɪ /

noun

1. 1. an anniversary of the day of one's birth

   2. ( as modifier )

      birthday present

2. the day on which a person was born

3. any anniversary

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Etymology

Origin of birthday

Middle English word dating back to 1350–1400; birth, day

Example Sentences

More than 60,000 greeting cards from all over the world have been delivered to a girl with cancer who wanted to break a world record on her eighth birthday.

From BBC

Epstein often sent her gifts, including for her birthday, even if they were late some years.

From The Wall Street Journal

"I'm going to put everything on the line. We're going to keep celebrating his birthday for the next month."

From BBC

The last time I ate at their restaurant was for my wife’s birthday.

From The Wall Street Journal

The emails suggest the closeness of Andrew to David Rowland, including that he was at Andrew's birthday party.

From BBC