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
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug