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1.
Verb: The act of using an electronic credit card reader attached to a phone to make a purchase or sale of narcotics while in a nightclub/event/festival/etc.
"Hang on, I gotta make a swipe in the club to pick up that Molly from one of my dealers."

"I need to find an ATM."
"No need, I can make a swipe at the club right now for what you want."
by Xavier DeLord September 05, 2013