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1 definition by Xer0X

A triple stack is an Ecstasy tablet that is supposedly 3 layers of mdma, or 3x as much mdma in one tablet. As said by Erowid, triple stacks are usually no different and used as a marketing gimmick by dealers. E, triple stack or not, is usually about 10-30 dollars in pricing.
"I just got triple stacks of E"
by Xer0X October 16, 2006