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(collective noun) individually small pieces of leftover chips left in the bottom of the bag, often no more than a half-inch by inch or smaller, which make up half the weight but 1/8 the space of every bag of chips, doritoes, pretzels or other snack material; forces those eating to pick up small stacks or awkwardly held bunches if you want to use the dip. (See also corn dust) Causes greasy fingers.
I accidentally dropped a bag of chips and created more potato dust at the bottom.
by phillydrifter September 01, 2010
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