Cousin-aunt
Full definition of cousin-aunt
Noun
cousin-aunt
(plural cousin-aunts)- Female first cousin of one's parent; one's female first cousin once removed.Mary is my mother's first cousin. That makes Mary my cousin-aunt. Judy is my dad's first cousin, so for me she is another cousin-aunt.
Usage notes
The terms cousin-aunt and cousin-uncle are used among the Mennonites, and in India and Pakistan.