Tappen (biology)

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A tappen is an obstruction, or indigestible mass, found in the intestines of bears and other animals during hibernation. Also referred to as a "rectal plug." They make it difficult for the animal to defecate during hibernation, but are often passed with great pain in the spring time.

(1989) Oxford English Dictionary, 2nd Edition, Oxford University Press. ISBN 0198611862. .