birth father

The genetic father of a child (as opposed to an adoptive father or stepfather).

Japanese Meaning

実父、つまり子の遺伝子に基づく父親。（養父や継父と区別される）

She traveled across the country to meet her birth father for the first time.

彼女は初めて実の父親に会うために全国を旅した。

Sense（1）

The genetic father of a child (as opposed to an adoptive father or stepfather).

birth fathers

（ plural ）