birth mother

noun

Definition of birth mother

: the mother of a child when the child is born specifically : a woman who gave birth to a child who has been adopted They had turned to an open adoption after pursuing infertility treatments for 18 years, and the birth mother had agreed to relinquish custody at the hospital. — Emily Nussbaum

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The first known use of birth mother was in 1958

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birth mother

noun

English Language Learners Definition of birth mother

: the mother of a child when the child is born : a woman who gave birth to a child who has been adopted

See the full definition for birth mother in the English Language Learners Dictionary

birth mother

noun

birth moth·er

Legal Definition of birth mother

: the woman who gave birth to a child especially as distinguished from the child's adoptive mother

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