look up any word, like dirty sanchez:
 
3.
Grampy is another way of saying Grandpa or Grandfather
My grandparents are called Grampy and Nana
by HolmbergHeart January 14, 2012
 
1.
Adjective: The attitude one exudes when having menstrual cramps, and being grumpy (ill-tempered, irritable, grouchy) because of it: Grampy.
Example: Sorry I was so Grampy this morning, baby, but I have PMS, and my cramps are really bad today.
by Fatboy67 September 28, 2013
 
2.
noun: one, usually being a grandpa, who excels are barbecuing.
My Grampy will BBQ for you!
by suckafishhh November 16, 2008