the sister of someone’s mother or father, or the wife of someone’s uncle
I have an aunt in Australia.
This is my Aunt Camille.
My aunt, who lives in the countryside, always welcomes us with freshly baked pies and a warm smile when we visit her.
Lisa's aunt offered to babysit her children while she and her husband enjoyed a rare night out.
My aunt and uncle are planning a family reunion next month, and I'm excited to catch up with all my cousins at the gathering.