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|Noun||1.||glass sponge - a siliceous sponge (with glassy spicules) of the class Hyalospongiae|
parazoan, poriferan, sponge - primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies
class Hyalospongiae, Hyalospongiae - sponges with siliceous spicules that have six rays; choanocytes are restricted to finger-shaped chambers
Venus's flower basket - a deep-water marine sponge having a cylindrical skeleton of intricate glassy latticework; found in the waters of the East Indies and the eastern coast of Asia