The space on your hand between your knuckles. Ben White invented this term.
I have a wart in my knuckle valley.
When a finger is inserted up to the 3rd knuckle.
Dude, Gavin just told me Katie deceided to get a little freaky and go finger to the power of knuckle on him whilst providing oral pleasure.
hands used in barehanded boxing aka fisticuffs
So, the gloves went off and we engaged in fisticuffs feeding ourselves five knuckle sandwiches until one of us saw stars
After the argument I just fed him a five knuckle sandwich
A camel toe before the advent of modern women's underwear, when bloomers were a common accessory.
Mary Lincoln has a raging bloomer knuckle.
Typically when you finger a girl up to your knuckle. Sometimes when two men try and finger each other.
EX. I got fucker knuckled last night and it felt great!
EX. David and I need to try to fucker knuckle tonight.
As pertains to construction site or job site lingo
A worker or person who is constantly screwing around and challenging rules, playing pranks, smoking cigarettes inside the building, being a general pain in the ass.
Listen here Fucker Knuckle! Rules are rules! If I catch you smoking in my building again, I’m gonna call your boss and have you removed from the jobsite.
smash or pass, pokemon edition
Hello everybody my name is markiplier and today, we're doing fuckle knuckles