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A person that is into techno/trance/club music.
Paul: hey John what music do you like, I like hip hop and rap.
John: sup, I like techno, i'm the biggest techhead you'll know.
by khaos2027 April 21, 2008
An uber-geek who is so into computers and I.T. that he could probably build a Pentium chip using two biscuits, a piece of string and a hampster's wheel.
"Matthew's a bit of a tech head."

"So that's why he has so many relationship problems..."
by Mr Ben February 07, 2005