A basic combination of the word "drunk" and "uncle". Can be used in terms of describing one's inebriated relative. Such male relatives are best known for their high demands for Chivas on the rocks or perhaps Johnny Walker Black at most family functions. To be light in the liquor department would be a poor choice, for a wild night is in the cards when one's Drunkle rolls through town.
Glenn: "I think Ron's wedding is going to be pretty dull. The open bar is only serving wine and beer."
Dylan:" Why would that make it dull?"
Glenn: " Well, my druncle Al is going to be there and he can do a double scotch dirty. I'm sure he'll be regular riot when he hears about this open barbullshit."
Quite literally, that Uncle who is always drunk. This Uncle is frequently jolly and wears a large goofy smile essentially all the time. Often, an under-the-influence member of the extended family brings with him/her a negative context, but, a Druncle is always wholeheartedly pleasant and full of hilarity. Think Santa Claus