word choice - Multiple older siblings

I have 2 older sisters. When talking to other people about them, do i refer to them both as 姉 or do i refer to the younger one as 姉 and the older one as 姉上?

Thanks!

P.S I thought this question would have already been asked, but couldn't find any. Even Google didn't have much on it.

Answer

姉上【あねうえ】 is a very old-fashioned honorific word for 姉. You would hear someone respectfully addressing their older sister with 姉上 mostly in samurai dramas. But you can never use it to distinguish your two sisters.

To distinguish your two older sisters, you can use 上【うえ】の姉【あね】 (older) and 下【した】の姉【あね】 (younger). If you had three older sisters, you can say 一番上の姉, 真ん中の姉/2番目の姉, 一番下の姉/3番目の姉.