What is a kind of cloth interwoven with small pieces of sponge and rendered waterproof on one side by a covering of rubber. When moistend with hot water it is used as a poultice called?

spongiopilin — A kind of cloth interwoven with small pieces of sponge and rendered waterproof on one side by a covering of rubber. When moistend with hot water it is used as a poultice. (Webster's 1913.)

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