Source : Webster's Revised Unabridged Dictionary (1913)

Locust \Lo"cust\, n. [L. locusta locust, grasshopper. Cf.
   {Lobster}.]
   1. (Zo["o]l.) Any one of numerous species of long-winged,
      migratory, orthopterous insects, of the family
      {Acridid[ae]}, allied to the grasshoppers; esp.,
      ({Edipoda, or Pachytylus, migratoria}, and {Acridium
      perigrinum}, of Southern Europe, Asia, and Africa. In the
      United States the related species with similar habits are
      usually called {grasshoppers}. See {Grasshopper}.

   Note: These insects are at times so numerous in Africa and
         the south of Asia as to devour every green thing; and
         when they migrate, they fly in an immense cloud. In the
         United States the harvest flies are improperly called
         locusts. See {Cicada}.

   {Locust beetle} (Zo["o]l.), a longicorn beetle ({Cyllene
      robini[ae]}), which, in the larval state, bores holes in
      the wood of the locust tree. Its color is brownish black,
      barred with yellow. Called also {locust borer}.

   {Locust bird} (Zo["o]l.) the rose-colored starling or pastor
      of India. See {Pastor}.

   {Locust hunter} (Zo["o]l.), an African bird; the beefeater.

   2. [Etymol. uncertain.] (Bot.) The locust tree. See {Locust
      Tree} (definition, note, and phrases).

   {Locust bean} (Bot.), a commercial name for the sweet pod of
      the carob tree.

Longicornia \Lon`gi*cor"ni*a\, n. pl. [NL., fr. L. longus long +
   cornu horn.] (Zo["o]l.)
   A division of beetles, including a large number of species,
   in which the antenn[ae] are very long. Most of them, while in
   the larval state, bore into the wood or beneath the bark of
   trees, and some species are very destructive to fruit and
   shade trees. See {Apple borer}, under {Apple}, and {Locust
   beetle}, under {Locust}.