bombyx

from WordNet (r) 3.0 (2006)

Bombyx
    n 1: type genus of the Bombycidae: Chinese silkworm moth [syn:
         {Bombyx}, {genus Bombyx}]

from The Collaborative International Dictionary of English v.0.48

Bombyx \Bom"byx\ (b[o^]m"b[i^]ks), n. [L., silkworm. See
   {Bombazine}.] (Zool.)
   A genus of moths, which includes the silkworm moth. See
   {Silkworm}.
   [1913 Webster]