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A measurement of food, bigger than a crumb but smaller than a piece. It is just large enough to get a taste without being filling at all, rather like a mise en bouche.
Boy1: 'give us a piece of your muffin'
Boy2: 'you can have a crummock'
Boy1: 'I despise you, however I will take said crummock...mmm, blueberry'
by freshprince202 June 02, 2011
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