小姐姐

1. • little girl who is older than another young child (e.g. her playmate)
2. • (slang) young lady (amiable form of address for a young woman of about one's own age or a little older)

     neologism c. 2017

Character by character

• 小(xiǎo)small
• 姐(jiě)older sister
• 姐(jie)older sister