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2.
nmn
No Middle Name. used on school report card to show that a person does not have a middle name. Used most commonly on Asian people.
ho, sam nmn

to, vimin nmn

xu, tom nmn
by Rick Chez January 13, 2007
 
1.
NMN
Term used to describe a girl who is just plain NASTY but not in the "infested with diseases type" nasty... just viciously NASTY! Often, people have lovingly applied such letters as an initial for someone who is Nasty as in Nasty McNasty... or Nancy McNasty!
Daamnn... did you hear what that NMN just said?? That was just straight-up NASTY that I can't even reiterate what she just said!
by Refrigerator Bandit February 03, 2010
 
3.
NMN
New Money Nigga
He sued the state now he's a NMN.
by nmn4life February 04, 2012
 
4.
NMN
No My Nigga
Tyrone: Yo let me get your car keys
Craig: NMN
by MindGames!!!!! October 27, 2010