彼は家長としての責任を果たしている。
He fulfills his responsibilities as the head of the household.
父が亡くなり、長男が家長となった。
When their father died, the eldest son became head of the family.
昔は家長の意見が何よりも重んじられた。
In the past, the word of the head of the family carried more weight than anything else.