Source : Webster's Revised Unabridged Dictionary (1913)

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

Source : WordNet®

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