alcyonium Meaning, Definition & Usage

Al`cy*o"ni*um noun
Etymology
Gr. a zoöphyte, so called from being like the halcyon's nest.
Definitions
  1. (Zoöl.) A genus of fleshy Alcyonaria, its polyps somewhat resembling flowers with eight fringed rays. The term was also formerly used for certain species of sponges.

Webster 1913