firstborn
🇺🇸
/ˈfɜːrstbɔːrn/
🇬🇧
/ˈfɜːstbɔːn/
The first child in a family.
The firstborn has a special place in the family's heart.
長男は家族の心に特別な場所を占めている。
Being the first child in a family.
Their firstborn son is the leader of the siblings.
彼らの長男は兄弟姉妹の中のリーダーです。