noun

1. The process of childbearing; the beginning of life.

2. An instance of childbirth.

   “Intersex babies account for roughly one per cent of all births.”

3. A beginning or start; a point of origin.

   “the birth of an empire”

verb

1. To bear or give birth to (a child).

2. To produce, give rise to.

adjective

1. A familial relationship established by childbirth.

   “Her birth father left when she was a baby; she was raised by her mother and stepfather.”

Synonyms: biological, blood, consanguineous