American Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition birthday in American English

birthday noun

[countable] noun
/ˈbɜrθˌdeɪ/
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 June 7th.

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 American English