noun
current head of a family; present household head
Refers to the person currently holding the position of family head, often in contexts of lineage, inheritance, or traditional households.
彼はこの家の当主として、家族をまとめている。
As the head of this family, he keeps the family together.
当主が亡くなり、長男が後を継いだ。
The head of the family passed away, and the eldest son succeeded him.