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1.
pronounced MAK-hed

n. a slang term for a person who regularly uses and is somewhat obsessed with Apple computers; or Macs.
If you have one or more Apple computers in your home and use them regularly, you are probably a machead.
by Graham T C February 11, 2006
 
2.
Somebody obsessed with Macintosh Computers and all things related to apple.
Wow, what a total mac head! Does he really need that many iAccessories for his iLife to be complete?
by drujon October 14, 2006
 
3.
A true Apple/Mac user.

Note: Different from a Mac Fanboy/girl who buys apple products like a sheep. Macheads don't even acknowledge Intel based Macs, and pray for the day Apple moves back the the superior PPC architecture or introduces an ARM based Mac.
Apple fan boys/girls make us true Apple fans, the Macheads look bad.
by bigApplemac September 15, 2011
 
4.
Noun

Slang term for a person who soups up or customizes Apple computers.
That machead made my old desktop wok as fast as a new machine.

The machead maxed out the RAM on my Mac.
by Cap'n do-rag September 20, 2009
 
5.
A dirogitary term used as a way to insult poor computer and poor programming skills skills, silly YouTube videos and a homosexual tone of voice.
The power button terns the computer you machead
by jeanJeanJean June 11, 2009