Conjunction of the words Nut and Sack, used to describe object resembling testicular appearance.
That girl’s booty cheeks look like a nack. Eww.
by Babycakes38 October 16, 2018
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Shalil: Bro, it's so damn hot outside. I think I've got swamp neck.

George: Goddamn, swamp nack man.
by NikolaiDmitri August 7, 2021
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Nack is an adjective: It means to sell something cheap that has a higher worth because you need a bag.
He nacked off that bike for five bucks and then went straight to the dope man
by Jayzpaidalldaze September 25, 2022
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A punk trick or loser and insubordinate person
by September 22, 2021
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Small scratches on the car, specifically on the bumper. It’s an Uptown New York slang that I just learned.
For sure I’ll have some nick-nacks on the bumper, it’s my first car.
by kbilgek September 4, 2023
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