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. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012