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species are very destructive to fruit and shade trees. See Apple borer, under Apple, and Locust beetle, under Locust.

Hence, roving; wandering; nomad; as, migratory habits; a migratory life. Migratory locust (Zoöl.) See Locust. -- Migratory thrush (Zoöl.), the American robin. See Robin.

An order of mandibulate insects including grasshoppers, locusts, cockroaches, etc. See Illust. under Insect.

r figure in the shape of an egg, or popularly, of an ellipse. Cassinian oval (Geom.), the locus of a point the product of whose distances from two fixed points is constant; -- so called from Cassini, who first investigated the curve. Thus, in the diagram, if P moves so that P A.P B is constant, the point P describes a…

rder of leguminous plants (Papilionaceæ) which includes the bean, pea, vetch, clover, and locust.

ts head is crested and glossy greenish black, and its back is rosy. It feeds largely upon locusts.

a pedal; having pedals. Pedal curve or surface (Geom.), the curve or surface which is the locus of the feet of perpendiculars let fall from a fixed point upon the straight lines tangent to a given curve, or upon the planes tangent to a given surface. -- Pedal note (Mus.), the note which is held or sustained through an…

The peel or skin. [Obs.] "Some be covered over with crusts, or hard pills, as the locusts." Holland.

A place to stand upon; a locus standi; hence, a foundation or basis for operations.

a. & n. from Pray, v. Praying insect, locust, or mantis (Zoöl.), a mantis, especially Mantis religiosa. See Mantis. -- Praying machine, or Praying wheel, a wheel on which prayers are pasted by Buddhist priests, who then put the wheel in rapid revolution. Each turn in supposed to have the efficacy of an oral repetition…

Any grasshopper or locust of the genus (Edipoda; -- so called from the quaking noise made during flight. Quaker buttons. (Bot.) See Nux vomica. -- Quaker gun, a dummy cannon made of wood or other material; -- so called because the sect of Friends, or Quakers, hold to the doctrine, of nonresistance. -- Quaker ladies (…

A genus of leguminous trees including the common locust of North America (Robinia Pseudocacia).

impressed or affected; hard; unfeeling; obdurate; as, a rocky bosom. Shak. Rocky Mountain locust (Zoöl.), the Western locust, or grasshopper. See Grasshopper. -- Rocky Mountain sheep. (Zoöl.) See Bighorn.

A division of Orthoptera including grasshoppers, locusts, and crickets.

A tree (Sophora Japonica) of Eastern Asia, resembling the common locust; occasionally planted in the United States.

the males of many insects, especially by Orthoptera, such as crickets, grasshoppers, and locusts.

g or waving motion; to turn and wave, like a flock of birds or insects. A pitchy cloud Of locusts, warping on the eastern wind. Milton.

(Geom.) A mathematical surface of the fourth order which, upon certain hypotheses, is the locus of a wave surface of light in the interior of crystals. It is used in explaining the phenomena of double refraction. See under Refraction. -- Wave theory. (Physics) See Undulatory theory, under Undulatory.…