noun
(someone else's) niece (honorific)
Honorific term used to refer to another person's niece, showing respect toward that person or their family. Not used for one's own niece.
社長の姪御さんは来年留学されるそうです。
I hear the company president's niece is going to study abroad next year.
お宅の姪御さんはおいくつですか。
How old is your niece?