Top Definition
Reminiscent of the hunched over cave man, with his arms to the ground. An insult used against those of extremely low intelligence, or general stupidity.

Also see low brow
Bubba is such a knuckle dragger.
by Matt September 29, 2004

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An individual, usually male, who lacks intelligence and/or culture.
The knuckle-dragger could not even name when the War of 1812 was.
by Tristan Reef October 22, 2007

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A really dumb redneck, country bumpkin
Larry The Cable Guy ain't nothin' but a knuckledragger
by cartoonmayhem August 22, 2006

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Military slang referring to infantry or Special Forces personnel, or paramilitary components of the US Intelligence Community.

The term stems from the common belief among the rear echelon and support personnel that Infantry soldiers are of generally lesser intelligence than support personnel.
The Liberty chow hall was full of knuckle draggers today, they smelled like B.O. and gun powder.

I had to catch a ride to the Green Zone with a platoon of knuckle draggers, and they made fun of my M16 A2 the entire time.
by cdangerd December 10, 2009

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Someone who's intelligence is less than or equal to that of your average caveman.
Wow, he really thought spending 803 Billion dollars we don't have was the way to fix the economy. What a knuckledragger!
by NO_Iwon'tpress1forEnglish September 01, 2010

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Friendly jibe for a Snowboarder. Often given to snowboarder by a skier buddy.
Skier to Snowboarder: Hey knuckledragger , quit scrapin the snow off the trail.
Snowboarder to Skier: Outta my way 2-planker, snowboarders pwn this mountain.
by 07079 January 14, 2009

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A term used for a human who is evidence of devolution - humans evolving back into apes and other primates.

This man often dribbles in public places; cannot drink a hot beverage without spilling it on himself, the floor or someone else; may walk into objects like lampposts and bushes; may ask questions repeatedly such as "how are you doing?", or "hows your computer software going?" and has an interwoven, messy beard that houses flees, mites, pieces of pork and dribble.

It's safe to say that the knuckle draggers of this world are a frightening breed, who you should avoid if at all possible.
Knuckle dragger: Hows the course going mate?
Average person 1: Ummm.... yeh fine I guess?!
Knuckle dragger: Oh yeh cool dude. You going paintballing this afternoon?
Average person 2: No I'm not.
Knuckle dragger: *Dribbles*
by KnuckledraggingGuy March 17, 2008

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