Function: noun
Date: 1875
: any of a class (Hexactinellida syn. Hyalospongiae) of chiefly deep-water siliceous marine sponges with 6-rayed spicules and a skeleton often resembling glass when dried
GLASS SPONGE
Meaning of GLASS SPONGE in English
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012