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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 26, 2009
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May 18 Word of the Day
When you think up something brilliantly righteous while baked.
X: I had this great highdea last night
Y: You clearly were philosopher stoned.
by TripleWest September 03, 2012
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2
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 04, 2009
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6
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 20, 2010
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