(intransitive, informal) To celebrate one's birthday.

A woman or girl whose birthday it is.

A man or boy whose birthday it is.

A greeting card given to someone to celebrate his or her birthday.

A cake, often iced and decorated, made to celebrate a person's birthday.

(idiomatic, often humorous) Nakedness, unclothed skin; an exposure of a human's natural anatomy without clothing. / Used other than figuratively or idiomatically: see birthday, suit.

A mark on the skin formed before birth.

Something owed since birth, due to inheritance.

The location where a person was born. / (by extension) The location where something was created or devised.

The ratio of total live births to total population for a specific community or nation in a specified period; often expressed in births per thousand per year