a biological mother (birth mother) or biological father (birth father) a biological parent.
Contemporary Examples

Is October Baby’s Pro-Life Message Misunderstood? Allison Yarrow March 27, 2012
After 44 Years Apart, Mother and Daughter Reunited by Facebook Nina Strochlic May 6, 2013
Frances McDormand on ‘Olive Kitteridge,’ Dropping LSD, and Her Beef With FX’s ‘Fargo’ Marlow Stern September 2, 2014

the woman who gives birth to a child, regardless of whether she is the genetic mother or subsequently brings up the child


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  • Birth-name

    the surname given a person at birth. Historical Examples Furze the Cruel John Trevena Omaha sociology (1884 N 03 / 1881-1882 (pages 205-370)) James Owen Dorsey Omaha sociology (1884 N 03 / 1881-1882 (pages 205-370)) James Owen Dorsey

  • Birthnight

    the night of a person’s birth, especially a birthday celebration for royalty. the anniversary of such a date. the celebration of a royal birthday. Historical Examples Sir Christopher Maud Wilder Goodwin His Grace of Osmonde Frances Hodgson Burnett Imaginary Conversations and Poems Walter Savage Landor Historic Tales, Vol. 1 (of 15) Charles Morris Other Things […]

  • Birth-palsy

    birth palsy

  • Birth–pang

    pains associated with the process of childbirth. Informal. the hardships and difficulties accompanying a major innovation, change, or new venture.

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