Knucklefust

-noun
A fist bump of awesomeness and encouragement.
-verb (without an object)
The act of fist bumping to show excitement or achievement. To take part in a fist bump with another person for their excitement or achievement.
-verb (with an object)
To tap a person or object encouragingly with your fist.

Other interpretations.
Can also be considered snide or suggestive in the rigght context.

And he gently knucklefusted him on the shoulder to let him know he did well.

Knucklefust by TheBlueSalmon July 29, 2011

knucklefuckle 

When two people go in for a handshake and one person puts up knuckles and the other person goes for a standard handshake. A fucked up handshake or a fucked up attempt at one.

The boss went to shake my hand and I gave him knuckles on accident. What a knucklefuckle.

knucklefuckle by DV8DUG September 27, 2017

knucklenuts

A trademark for an outrageously cool titanium ring

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 28, 2006

Knucklebuster

A car, usually an old American car (1930's-1970's) who seems determined to skin, slice, and slash the hands of every mechanic who touches it, regardless of their skill-level. Resistant to tools, penetrating oils, vice grips, and laws of physics. Any bolt that is in this car will STAY in this car, whether you want it there or not, and if you try to remove it, it WILL break off, and leave you requiring 15 stitches in the process.

Holy Hell.........that '49 Mercury just tore my whole hand open, and all I was trying to do was change her damn oil!! What a knucklebuster!!

Knucklebuster by crackedheads666 August 2, 2010

knucklenuts

A trademark for an outrageously cool titanium ring! Go to knucklenuts.com.

I'm getting me one of those KNUCKLENUTS rings!

knucklenuts by Ti Nuts September 21, 2008

knuckledusters 

A form of hand-to-hand combat weaponary, that fits around a persons fingers, to increase the amount of damage created with a punch. These are usually metal.

John: "How come your face is cut?"
Mark: "Adam hit me with knuckledusters on."

knuckledusters by IKane June 13, 2006

knuckleduster 

A british term for brass knuckles.

I hit him in the side of the face with my knuckleduster.

knuckleduster by Combat 84 June 28, 2004