Noun
grunkle (plural grunkles)
A great uncle.
I'm staying for summer break at my grunkle's place.
Grunkle Stan (also voiced by creator Alex Hirsch) takes in Mabel and Dipper for the summer and is a savvy con man throughout the series. Source: Internet
Grunkle Stan would be ranked lower on this list if he hadn't been working with his brother's technology to try to bring him back. Source: Internet
The whole truth about Grunkle Stan has been in this episode that is one part flashback and one part aftermath of the last episode. Source: Internet