cavicornia

from The Collaborative International Dictionary of English v.0.48

Cavicornia \Cav`i*cor"ni*a\ (k[a^]v`[i^]*k[^o]r"n[i^]*[.a]), n.
   pl. [NL.] (Zool.)
   A group of ruminants whose horns are hollow, and planted on a
   bony process of the front, as the ox.
   [1913 Webster]