n. [ AS. hyrnet; akin to OHG. hornaz, hornuz, G. horniss; perh. akin to E. horn, and named from the sound it makes as if blowing the horn; but more prob. akin to D. horzel, Lith. szirszone, L. crabo. ] (Zool.) A large, strong wasp. The European species (Vespa crabro) is of a dark brown and yellow color. It is very pugnacious, and its sting is very severe. Its nest is constructed of a paperlike material, and the layers of comb are hung together by columns. The American white-faced hornet (Vespa maculata) is larger and has similar habits. [ 1913 Webster ]
Hornet fly (Zool.),
To stir up a hornet's nest,