网页the woman who gave birth to a child, although she may not now be the child's legal mother: See more. birth parent uk / ˈbɜːθ ˌpeə.rənt/ us / ˈbɝːθ ˌper.ənt/ noun. the woman who gave birth to a child or the man who helped to conceive a child , although she or he may not now be the child's legal parent: See more.