Achi

Proper noun

 * 1) A language of Guatemala.

Etymology 2
From.

Noun

 * : Sister
 * : Miss; Sister
 * : Miss; Sister

Usage notes
In the Philippines, the term is primarily used and recognized within Chinese Filipino families as the predominant term to refer to and address the eldest sister in the family, and by extension, any elder sister in the family or even any older young female that the speaker is familiar with.