'Glass-sponge' definitions:

Definition of 'Glass-sponge'

From: GCIDE
  • Glass-sponge \Glass"-sponge`\, n. (Zool.) A siliceous sponge, of the genus Hyalonema, and allied genera; -- so called from their glassy fibers or spicules; -- called also vitreous sponge. See Glass-rope, and Euplectella. [1913 Webster]