Abbreviation for Nota Bene ("Note Well"). Pedonator to Nojo, 10/29/09: It’s a wink-wink in the fine print: Pay attention to this, sucka.
NB: Trespassers will be shot on sight.
by JR in MA October 30, 2009
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Noun. NB (also Nb, nb, and the phonetic "enby") is an abbreviation for "non-binary" and denotes a spectrum of gender identities that do not follow the traditional gender binary expressions of "male" and "female".

NB is often used attributively to describe people who identify as non-binary and is also often used by those individuals to describe themselves.

**Important: NB is NOT to be confused with NB, which has its own listing; that's right, they're homonyms. Good times.

NB, The gender identity, is rarely expressed with periods, in part to differentiate it from the more commonly punctuated latin abbreviation for 𝘯𝘰𝘵𝘦 𝘣𝘦𝘯𝘦 but also as a matter of visual preference and in keeping with general LGBTQ nomenclature.
Urban Dictionary has not yet responded to my complaint regarding their existing definitions of "NB"; instead, this important category of gender identity and its distinction is being ignored as if it doesn't matter. How very interesting.
by Kali Yuga Swan Song December 6, 2019
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Abbreviation for "not bad"

Often used in online chat
Guy 1- How was the basketball game

Guy 2- Pretty good. I scored 14 points and grabbed 8 rebounds

Guy 1- nb
by NICCOS May 25, 2009
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Used in text or messaging among people from Northern Ireland, it stands for No Bother pronounced as "No Baw" it's used in similarly to how "no problem" or "no sweat" is used.
Person 1: "You in the burn tonight then"
Person 2 :"Not tonight lad I've got work"
Person 1:"NB"
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Nasty Bitch Sydrome. The nastiest motherfucker in the history of all motherfuckers. Commonly used by group of hooligans that go by the name of BNI to describe their most hated and no. 1 enemy. More feared then simps
Greken : “I’m horny”
Dark Mode : “I swear if u go to NBS i ain’t gonna be chill”
by BNI Director of operations April 14, 2020
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nb is an abbreviation for the word nobody. usually used in text
john: hey sarah i gotta ask you something, who are you with
sarah: nb what’s up?
by sccgh sdgvh November 10, 2019
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nb is an abbreviation for "nose breathe".

Nose breathes commonly occur when you find something funny. Rather than laughing out loud, one exhales or breathe though your nose.
Example One:

Glenda: "most the time when I say lol I don't even lol."

Hilda: *nb* "niether do I just nb."

Example Two:

*Rudy's phone rings*

Hilda: *nb*
by archibaldtheconquistador May 11, 2009
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