An Australian Financial Institution. HQ in Melbourne. The largest bank by market capitalisation on the Australian Stock Exchange as of March 2006. Well known for its "Homicide" and trading scandals.
Aussie: I am going to NAB for a deposit

American: @$#%?
by Horng Wang April 2, 2006
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Plural for Nab.

In a gaming environment a replacement for the word newb, newbie, or total retard in a given situation.
Thanks to these nabs, we lost yet another game.
by canthinkofname July 21, 2010
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nab..a bum ass bitch,who doesnt have nothing,or no goals in life.need we say more?
by fitzjr July 26, 2009
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A little bit of something; a pinch; a dash; or any other small unit or miniscule cooking measurement.
(In Chemistry Lab)
Lakisha: Aye, Meagan will you pass me a lil nab-nab of dat Na Cl shit?

Meagan: Why yes, Lakisha, here is about .23 grams of Sodium Chloride.
by IdespiseUNC July 22, 2009
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Used to describe a woman who loves drama and sleeps with men even if she knows they have STDs. NAB stands for Nasty Ass Bitch. This type of girl is often refered to as a slut, whore, skank, etc. She loves to talk shit about everyone, even people she says are her "best friends." She tends to party too much and cannot handle her alcohol. NAB is usually used to describe any girl who is a two-faced bitch nasty whore.
Have you talked to NAB today?
Who is that?
Oh, that's what we call Amy now cause she's a Nasty Ass Bitch!
by haha...youknow January 20, 2011
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An ice cold NAB is the perfect refreshment when you've partied too hard the night before and need to appear social at an event.
by Adult Beverage September 14, 2011
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