(n.) The elastic fibrous skeleton of many species of horny Spongiae (keratosa), used for many purposes, especially the varieties of the genus Spongia. The most valuable sponges are found in the Mediterranean and the Red Sea, and on the coasts of Florida and the West Indies.
SPONGE
Meaning of SPONGE in English
Webster's English dictionary. Английский словарь Webster. 2012