Spongiopilin

Spon`gi`o`pi´lin

    (~ô`pī´lĭn)

n.

1.

(Med.) A kind of cloth interwoven with small pieces of sponge and rendered waterproof on one side by a covering of rubber. When moistened with hot water it is used as a poultice.

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.