Top Definition
The dried on bits of leftover cereal stuck to the edge of the bowl. If left unwashed or rinsed, these particles will immediately begin to harden into a spackle that cannot be removed by even the toughest sponge.
Alicia left her bowl of cereal on the bedside table last night, and now she is chipping away at the cereal spackle.
by ProfS May 04, 2010

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