Best definition
zxc
Manly, powerfull and/or knowledgeable.
It is pronounce SEXY. Ze-eX-Ce Z-X-C

That Hacker is zxc!

That zxcbastard!
zxc: define #2
zxc
A name of a South African LAN organising company
Hey guys, I am going to go to the zxc LAN this Friday.