To do something with a degree of certainty, ample strength, or lasting ability.
Tiger Woods is a golfing machine

That guy just did 1000 sit-ups, he's a machine.

A) Josh can fuck all night long.
B) Yea, he's definetly a machine
by Bug August 27, 2003
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Attractive women with large breasts similar to 'baps!'
(Attractive, busty girl walks past)
Machines!
by Loudvirus September 27, 2006
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in London, UK it can mean a gun.
as in "bring your queen leave your machine."
by jammy1234 March 30, 2007
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A person who is very appealing and attractive, esp. females. Commonly used in surbubia Sydney.
What a Machine! Look at that chick, she's got it all!
by sweetfemale June 28, 2006
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a crazed person, whether they are under the influence of alcohol or drugs. They have a non stop motor, and will get messed up at all costs. They party like rock stars and fight like warriors. There is no stopping them from doing what they want to do.
Nick is a machine! Did you see him take down that bottle of Jack and take outthat pack of idiots? Laino is the Machine!
by Mmmmmmmmmmmm November 1, 2006
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