Someone who is totally into cars and is very knowledgeable about how to modify and fix them.
Eric is such a gearhead he has a seatbelt buckle for a belt buckle.
by ghost August 1, 2003
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A person who is into all things motorized. This can be cars, motorcycles, machines, planes, or boats, but specifically relating to the engine and power delivery. Knowing how to weld and machine metal are also traits of a gearhead.
Dude, she's such a gearhead. Go show her that old lathe and tools in your grandfather's garage and she'll be in heaven.
by Analogworm January 7, 2008
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Player 1: Fast travel to me, I need assistance ASAP!
Player 2: I can’t, I’m gearheaded.
by kdlaird May 18, 2020
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(n.) Someone who collects the latest, coolest, most efficient, and technologically advanced gadgets for their sport, interest, or hobby.
Did you know Jeff can track our hike's distance, route, and elevation gain with his new GPS unit? He is such a gearhead.
by MM June 3, 2004
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Someone who smokes/shoots heroin.
TOM: "You gearheads are gonna be clucking real soon...in fact, your cluckin' right now."
SAM: "Just give us the shit and we'll be fine."

by Christophe Graham September 4, 2006
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Someone who is into, collects, or has a fetish for sports gear , sport uniforms, protective gear, etc (scuba gear, SWAT, football uniforms, motorcross gear, hockey pads, lacrosse, soccer, fighter pilot, etc).
Q: "have you ever seen how much sports equipment Jason has in his closet?"
A: "yeah, i know, he is such a gearhead"
by chr|s sedition September 9, 2005
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See also rivethead for a more precise definition. In a nutshell, one who listens to industrial mEwzIk (a.k.a. music) and has a look very rarely seen. The most common triats of the gearhead/rivethead include WWII fighter pilor googles/welding goggles, army helmets, anything remotely militarian or camoflauge, large, black, steel-toed boots (used for stomping the enemy or rivetheads, the raver), most anything UV, sometimes utilizing computer parts as accessories, with most anything original and futuristic. The look is, in most common high school cliques, quite new and original.
Stereotyped Hot Topic "Goth": Check out that gearhead. I bet he listens to Nine Inch Nails.
Overhearing Gear/Rivethead: Shut your tube filth pig! Nine Inch Nails is shit! I listen to Apoptygma Berzerk, KMFDM, VNV Nation, ohGr, The Gemini Ritual, :Wumpscut:, Skinny Pu... Why the fuck am I telling you this?! *proceeds to stomp poser goth to death*
by äRK åNJêL December 21, 2004
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