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18.
1) An alternative to first base that is used mostly by conservative Christians and, rarely, Zoroastrians. This act is done by a couple interlocking knuckles and thrusting their arms back and forth (Noun)
2)Knucka (Noun)
3)Knucking (Verb)
4)Knuckable (Adjective)
"Sammie thought he was being all sly, but I saw him knucking with his girl before 4th period"
by Jookill4 June 11, 2008
 
1.
To hit a person with your knuckles.
Knuck if you buck boy!
by C.Phil January 14, 2004
 
2.
1) fight
2) step up
Knuck if you buck, boy!
by Vaeh October 06, 2004
 
3.
To beat the shit out of someone or something using your bare hands
I'll knuck the fuck out of you if you touch my women
by E-rock April 08, 2005
 
4.
When two people hit their knuckles together (when hands are in a fist). Many times used instead of a handshake or high-five.
Upon seeing friend...
"Hey what's up brother?"
Action: Knucks.
by Becky24 October 19, 2005
 
5.
Short for brass knuckles.
Don't punch me when you're wearing those knucks.
by Rodney Basil October 05, 2003
 
6.
A synonym to pound it. It is a fist to fist contact in a congratulatory way. Often used to replace a high 5 or shaking hands.
Steve: Hell yeah! This Euro-trip rocks!
Jerry: I know, check out that european ass!
Steve & Jerry: Knucks!
by Benormous April 18, 2006
 
7.
The cool way of saying knuckles. An awesome way to ask your friends for a fist touch :)
You should just KNUCK her in the face.

Give me KNUCKS bro.
by smileyshelbz December 25, 2009