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1 definition by leahmarie8390

 
1.
A man who has had relationships or relations with both your aunt AND your grandmother. Your uncle, AND your grandpa. Thus, grunkle.
"Uncle Rob is dating grandma now, he's your grunkle"
"I don't want to go to Christmas dinner, grunkle Rob creeps me out"
by leahmarie8390 April 29, 2009