Definition of おねえちゃん
-
(n) familiar form of "older sister"
私はお姉ちゃんの夕飯をラップに包んでしまわないと。
I have to wrap my sister's dinner in clingfilm. -
form of address for young adult female
ママ〜!あのお姉ちゃんとお兄ちゃん、お手手繋いで、すっごく仲良しさんだね〜!
Mama! That lady and man are holding hands, they're great friends aren't they!