elder daughter; older daughter
Refers to one's own elder daughter or the elder daughter in a family. Not used for someone else's elder sister.
私の姉娘は来年大学を卒業します。
My elder daughter will graduate from university next year.
姉娘が料理を手伝ってくれた。
My older daughter helped me with the cooking.
Standard kanji spelling for 'elder daughter'.
Compound of 姉 (ane, 'elder sister') and 娘 (musume, 'daughter'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning 'elder daughter'.