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

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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

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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

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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

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