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Definition birthday in British English

birthday noun

[countable] noun
/ˈbɜː(r)θdeɪ/
1

the day each year that has the same date as the one on which you were born

Example

It's her seventeenth birthday tomorrow.

Example

Her birthday is on 7th June.

Synonyms and related words
1.1

intended to celebrate someone's birthday

Example

a birthday party/card/present

Synonyms and related words
Definition birthday in British English