In a male homosexual couple, the nonbiological father (partner of the biological father) of a child.
A parent in a same-sex couple.
A godparent.
A divorced or separated parent who shares custody with the other parent.
Someone who shares in the parenting of a child or children, such as
To act as a co-parent; to share custody of a child or children; to share in the responsibility of parenting a child or children.