also: とうぶく
noun
child born to one's current wife
Used in contexts distinguishing children from a current marriage versus those from a previous marriage or other relationships. The term is somewhat formal and may appear in legal or family-register discussions.
当腹の子と先腹の子の間で相続の話し合いが行われた。
Discussions about inheritance were held between the child of the current wife and the child of the previous wife.
Obsolete reading; the modern reading is とうふく.
Refers to a child born to a previous wife, in contrast to 当腹 which refers to a child of the current wife.
Compound of 当 (current, this) and 腹 (belly, womb). The exact historical derivation is uncertain, but the term is conventionally used in family and legal contexts to refer to children of the current wife.