長女

1. Origins, structure, and basic meaning

• Structure: In 長女 (ちょうじょ), eldest 長 and daughter 女 combine to denote the eldest daughter.
• Basic usage: 長女 means the eldest daughter within a family.

2. Common pitfalls and similar expressions

• Birth order among daughters
  • She need not be the first child if there are older sons, so the restriction to daughters must be preserved.