To have a tendency to want or to be interested in mechanical things; to understand, and be able to work on things of a mechanical nature, or things with gears.
That boy over at AutoZone is a total gearhead, he loves to work on his car.
A word that is often said when one goes to Footwork and puts back more drugs than a pharmacy. This word is always accompanied by a gross, waste case stare.
"GAAAH" was all that Gord the wasted weirdo could say after popping 10 pills of xtc, railing 4 g's of yay, drinking a 24 box of beer & smoking 3 pounds of weed