hawk fly
Webster's Dictionary (GCIDE)
Hornet fly (Zool.), any dipterous insect of the genus Asilus, and allied genera, of which there are numerous species. They are large and fierce flies which capture bees and other insects, often larger than themselves, and suck their blood. Called also hawk fly, robber fly.
To stir up a hornet's nest, to provoke the attack of a swarm of spiteful enemies or spirited critics. [Colloq.] [1913 Webster]
Note: Among the common American species are the red-tailed hawk (Buteo borealis); the red-shouldered (Buteo lineatus); the broad-winged (Buteo Pennsylvanicus); the rough-legged (Archibuteo lagopus); the sharp-shinned (Accipiter fuscus). See Fishhawk, Goshawk, Marsh hawk, under Marsh, Night hawk, under Night. [1913 Webster]
Bee hawk (Zool.), the honey buzzard.
Eagle hawk. See under Eagle.
Hawk eagle (Zool.), an Asiatic bird of the genus Spiz[ae]tus, or Limn[ae]tus, intermediate between the hawks and eagles. There are several species.
Hawk fly (Zool.), a voracious fly of the family Asilid[ae]. See Hornet fly, under Hornet.
Hawk moth. (Zool.) See Hawk moth, in the Vocabulary.
Hawk owl. (Zool.) (a) A northern owl (Surnia ulula) of Europe and America. It flies by day, and in some respects resembles the hawks. (b) An owl of India (Ninox scutellatus).
Hawk's bill (Horology), the pawl for the rack, in the striking mechanism of a clock. [1913 Webster]