Top Definition
A car traveling with all external lights off at night, as to remain unnoticeable to standers by, regularly in an unpopulated and suburban area. Almost always filled with hooligans and traveling at excessive speeds. Phrase often used by the driver and cheering on passengers.
Driver / Passenger: 'WOOOHOOOO GHOST MACHINE!! GHOST MACHINE!
Stander by: 'What was that?'
by Chris J Dixon December 23, 2006

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