To not put up with, tolerate or endure.
"He is was looked at in awe for his disagreement to knuckle under"
when you fist someone with a handful of popping candy
I gave Ellis the knuckle cluster behind maccies last night
to street fight, throw hands, box, or brawl.
Dam my hand hurts...we'll that's what happens when you throw knuckles!
v. The act of a female punching a person (male or female) in the face. punch
"Julia knuckle slapped that bitch kissing her boyfriend."
A fighter - professional or otherwise who, win or lose, lacks the punching power to knock you out.
"Come on Spam Knuckles is that all you've got for me?"
The knuckle in which you use to barf with. Normally used by people who are anorexic or just need to blow chunks.
Dude One: "Man, have you seen that chicks barf knuckle?"
Dude Two: "Yeah man, she needs to tone it down, it is starting to callus"
Dude One: "Thats gross man."
While banging a chick/dude from behind, and right before climax, you punch him/her in the back of neck with your dry knuckle and climax in harmony
Dude, guess what? Carrie came over last night and I gave her a dry knuckle.