Top definition
1. The son of one's grandparent's stepsibling.
2. The stepson of one's grandparent's sibling.
3. The son of one's stepgrandparent's sibling.
2. The stepson of one's grandparent's sibling.
3. The son of one's stepgrandparent's sibling.
My step-cousin-uncle is a good person.
by Elivaldeq November 24, 2019