When your niece or nephew becomes a parent, you become a great uncle, a gruncle.
My niece had a baby girl and now I am Gruncle Bob.
by Sutarooni April 27, 2009
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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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A gruncle occurs in the very freaky situation when your uncle, the brother of your father or mother, marries your grandmother, the mother of the opposite parent.
Roger's uncle, his father's brother, married his grandmother, his mother's mother. Roger's uncle is now his gruncle.
by iwantpancakes. January 21, 2010
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An uncle with a grudge. usually the surly uncle with a gripe against something or some one.
nephew 1: omg there is uncle vee!

nephew 2: Oh god don't hes got a grudge against the state right now

nephew 2: oh Gruncle vee is back again huh
by UncleAlf December 30, 2020
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