Your brother's or sister's brother-in-law, or your niece's or nephew's other uncle(s) that aren't your brothers.
Jonathon and I aren't blood related, as his sister married my brother, but we are co-uncles to Jack and Caroline.
by OneEyedWilvis October 09, 2008
My half-co-uncle-in-law is a good person.
by Wonbig October 13, 2021
My co-great-uncle-in-law is a good person.
by Elivaldeq November 24, 2019
My first co-cousin-uncle-in-law is a good person.
by Elivaldeq November 24, 2019
My co-cousin-uncle-in-law is a good person.
by Elivaldeq November 24, 2019
My co-uncle-in-law is a good person.
by Gerald128 April 06, 2021
My co-uncle-in-law is a good person.
by Wonbig October 13, 2021