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1.
The act of pressing ctrl+alt+del on a computer to reset it.
The damn thing froze on me so I gave it the three finger salute.
by SirAstounding October 13, 2003
 
2.
Pressing Control-Alt-Delete on a computer keyboard to boot, reboot, or clear a program on the computer.
My computer stalled, so I have to give it the three-finger salute.
by pentozali January 29, 2009