noun The process of childbearing; the beginning of life; the emergence of a human baby or other viviparous animal offspring from the mother's body into the environment.
noun An instance of childbirth.
Intersex babies account for roughly one per cent of all births.
noun A beginning or start; a point of origin.
the birth of an empire
noun The circumstances of one's background, ancestry, or upbringing.
He was of noble birth, but fortune had not favored him.
noun That which is born.
adjective A familial relationship established by childbirth.
Her birth father left when she was a baby; she was raised by her mother and stepfather.