birth mother

British  

noun

1. 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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Example Sentences

"I said 'mum, you open it', so she opened the letter over the phone and there was tears and she was reading this thing to me - it was a pouring out of emotion by a woman called Ann McCrea, who was my natural birth mother," Cunnah said.

From BBC

Cunnah decided to go and meet his birth mother, who lived in Strabane, County Tyrone, not far from his hometown of Derry - and was "blown away" to find out he had three half-brothers and one half-sister.

From BBC

"And that was that," he said, adding that he has now known his birth mother for longer than he didn't know her.

From BBC

This time, Jonah didn’t bother correcting Chip out loud, though his brain translated, You mean, your birth mother set up an adoption plan.

From Literature

Sometimes Jonah’s mom would say things like, “You have such great dimples and such beautiful eyes—do you suppose those came from your birth mother or your birth father?”

From Literature