birth mother

:  the emergence of a new individual from the body of its parent

:  the act or process of bringing forth young from the womb

:  a state resulting from being born especially at a particular time or place

:  to bring forth

:  to give rise to :  originate

:  to give birth to

:  biological

:  a female parent

:  a woman in authority

:  the superior of a religious community of women

:  of, relating to, or being a mother

:  bearing the relation of a mother

:  derived from or as if from one's mother

:  to give birth to

:  to give rise to :  produce

:  to care for or protect like a mother

:  mother of vinegar