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]WordNet (r) 3.0 (2006):
Bombyx n 1: type genus of the Bombycidae: Chinese silkworm moth [syn: Bombyx, genus Bombyx]