Your brother's or sister's sister-in-law, or your niece's or nephew's other aunts that aren't your sisters.
Liz and I aren't blood related, as her sister married my brother, but we are co-aunts to the same children.
by OneEyedWilvis October 09, 2008
My co-aunt-in-law is a good person.
by Gerald128 April 06, 2021
My half-co-aunt-in-law is a good person.
by Wonbig October 13, 2021
My co-great-aunt-in-law is a good person.
by Elivaldeq November 24, 2019
half-co-aunt-in-law.
by Simaduria July 27, 2024
My first co-cousin-aunt-in-law is a good person.
by Elivaldeq November 24, 2019
My co-aunt-in-law is a good person.
by Wonbig October 13, 2021