I had a sister quite a few years older than myself. She had a child - my niece - who is only three years younger than me. We spent a lot of time together growing up. I am close like a brother, but technically her uncle. Hence the word Bruncle. Additionally, that makes her my sister/niece or sniecester.
by pistolapete March 20, 2011
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Whan some how your uncle become's also your brother and you are unsure of what to actually call him when introducing him to other's.
When my mom took in my Uncle who was only 4 year's older then me and 2 year's older then my sister, but was 18 year's younger then my mom, he was my Uncle who became my Brother. He was now my Bruncle!

Hey, check out Lana's bruncle. He's pretty cool how he is alway's there for her, just like a brother would be.

When you consider your uncle to be more of a brother then an uncle, he become's your bruncle... Yipee!
by Lana-GigglesOverU March 1, 2009
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a family tree where every relative is related in more than one way to every other relative
everyone in my family is part of the bruncle tree
by CheVelle 50 December 16, 2021
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When your brother in-law is also your uncle, like Oedipus
Oedipus: “I’m going to go see my bruncle in-law, Creon.”
by alyssas.defs December 19, 2021
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A man who is your brother, uncle and your father. This is possible if your mother slams her own father, giving birth to what would normally be your Bruncle. If your Bruncle then gets six inches deep in your mom, the resulting abomination will be you, and he will be your Bruncle Dad.

Likewise, you are your Bruncle Dad's Brophew Son.
"Your bruncle dad is fucked; he has webbed toes and hasnever had a job."
"Fuck you, at least my bruncle dad is still alive you orphan bastard!"
by John Fun February 10, 2016
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Bruncle-tash's are more commonly found on that peasant underclass known as 'chavs'.
''Ere Dwayne what's going on with your mouth.Are you trying to grow a moustache or something?''

''Nah brethrin! brrrap...I az spent da evening feltchin me bruncledads chocolate starfish,u get me.Now i've got me very own bruncle-tash,itz well wicked.....innit!!''
by chavlosers November 25, 2007
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This happens when mothers has sexual relation with her spouses (PATERNAL) fATHER. The child is raised as the brother of the mother and father child. The reality is the child is offspring of the paternal grandfather. Thus combining the word BROTHER+UNCLE= BRUNCLE
The reason my parents divirced is because my mom cheated on my dad with his father, now instead of a brother he is my bruncle.
by pdxbill November 20, 2021
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