Top Definition
A family tree that branches out and then back in to a common relative. Generally due to distant incest among relatives.
Your father's mother and mother's mother are the same person forming a Family Diamond instead of a family tree.
by JDUB187 June 22, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.