present participle of birthday

simple past tense and past participle of birthday

(rare) An unclothed person.

Resembling or characteristic of a birthday.

(historical) A book, in diary form, in which one's friends enter their birthdates in their own handwriting.

plural of birthday book

The right (unconditional or near-unconditional) of anyone born in the territory of a state to nationality or citizenship.

Said or written to a person after his or her birthday in order to convey the good wishes of the speaker or writer.

Said or written to a deceased person on his or her birthday in order to convey the good wishes of the speaker or writer.

plural of heavenly birthday