Hyalonema
Hyalonema , noun
[New Latin, from Greek "y`alos glass + {not transcribed} a thread.]
(Zoology) A genus of hexactinelline sponges, having a long stem composed of very long, slender, transparent, siliceous fibres twisted together like the strands of a color. The stem of the Japanese species (Hyalonema Sieboldii), called glass-rope, has long been in use as an ornament. See Glass-rope.