gorgonia

from The Century Dictionary.

• A Linnean genus of polyps, typical of the family Gorgoniidæ; the sea-fans with arborescent sclerobase. See cut under coral.
• A genus of noctuid moths.
• A genus of gnus. See gnu. Also Gorgon. J. E. Gray.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A genus of Gorgoniacea, formerly very extensive, but now restricted to such species as the West Indian sea fan (Gorgonia flabellum), sea plume (G. setosa), and other allied species having a flexible, horny axis.
• noun Any slender branched gorgonian.