Another way of saying "Great Uncle" (your grandparent's sibling)
Gruncle is coming over for dinner tomorrow, I hear he knows how to steal noses.
by LolitaAlvarez2 February 4, 2009
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gruncle....a combing of two words great uncle
Gruncle Gord got to hold his neice for the first time tonight.
by RETALS April 13, 2011
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Somebody who acts gruncley all the time.
Hey did you see Gruncle Sam yesterday he wasn't allowing me to play ram ranch.
by RussianCitizen January 26, 2020
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An uncle who keeps on gregging.
Damnnnnnn my dads brother acts like suchhhhhh a greg. What a gruncle.
by jeebneeb November 7, 2020
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Great-Uncle or Granduncle

The brother of a grandparent.
This is your Gruncle John, your Granddad's brother!
by PetticoatLane October 18, 2019
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The Cousin of another Cousin who ends up pregnant by that' cousins husbands son.
Aye yo, you heard your cousin Craig is having a baby with uncle Tonys daughter right? But ain't that her uncle? Yeah, so now it makes him a gruncle.
by MoreUrban January 12, 2023
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