- Spongiopilin Spon`gi*o*pi"lin (-[-o]*p[imac]"l[i^]n), n. [Gr. spoggi`on, dim. of spo`ggos a sponge + pi^los felt.] (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. [1913 Webster]
The Collaborative International Dictionary of English. 2000.