ˈbirth ˌparent BrE AmE noun [countable]
a child’s natural mother or father, rather than someone who has become the child’s legal mother or father through ↑ adoption
ˈbirth ˌparent BrE AmE noun [countable]
a child’s natural mother or father, rather than someone who has become the child’s legal mother or father through ↑ adoption
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012