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Abbreviation for "Manslaughter in the First Degree."
"Man One is out of the question for such an offense."
by Jerry September 07, 2004
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A girl that IS NOT prude, however not a slut. She's gorgeous and kind. You could talk to her for hours without ever getting bored, and you can't help but open up to her.
- Is that girl a slut or a prude?

-Neither, she's a Manone
by super unicorn fart January 12, 2015
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