Top Definition
1. A quantity of alcohol of at least a handle, 1.75 L, in size which has been purchased at a wholesaler for below liquor store prices.
2. Wholesaler's own brand of alcohol...in the case of Costco, Kirkland signature.
"Yo, that handle of Jack must've set you back 55 at the liquor store..."
"Nahh, man. It's Costcohol; 28 dollars."

"You buy that all for yourself?" "It's Costcohol for the party"
by JaCeph86 January 02, 2008

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