(Ar"my worm`) (Zoöl.) (a) A lepidopterous insect, which in the larval state often travels in
great multitudes from field to field, destroying grass, grain, and other crops. The common army worm of
the northern United States is Leucania unipuncta. The name is often applied to other related species,
as the cotton worm. (b) The larva of a small two-winged fly which marches in large companies, in regular
order. See Cotton worm, under Cotton.
(||Ar"na ||Ar"nee) n. (Zoöl.) The wild buffalo of India (Bos, or Bubalus, arni), larger than the domestic
buffalo and having enormous horns.
(Ar*nat"to) n. See Annotto.
(Ar"ni*ca) n. [Prob. a corruption of ptarmica.] (Bot.) A genus of plants; also, the most important
species native of the mountains of Europe, used in medicine as a narcotic and stimulant.
The tincture of arnica is applied externally as a remedy for bruises, sprains, etc.
(Ar"ni*cin) n. [See Arnica.] (Chem.) An active principle of Arnica montana. It is a bitter resin.
(Ar"ni*cine) n. (Chem.) An alkaloid obtained from the arnica plant.
(Ar"not Ar"nut) n. [Cf. D. aardnoot, E. earthut.] The earthnut. [Obs.]
(Ar*not"to) n. Same as Annotto.
(A"roid A*roid"e*ous) a. [Arum + -oid.] (Bot.) Belonging to, or resembling, the Arum family of
(A*roint") interj. [Cf. Prov. E. rynt, rynt thee, roynt, or runt, terms used by milkmaids to a cow
that has been milked, in order to drive her away, to make room for others; AS. ryman to make room or
way, fr. rum room. The final t is perh. for ta, for thou. Cf. Room space.] Stand off, or begone.
Aroint thee, witch, the rump-fed ronyon cries.
(A*roint"), v. t. To drive or scare off by some exclamation. [R.] "Whiskered cats arointed flee."
(A*ro"ma) n. [L. aroma, Gr. : cf. OE. aromaz, aromat, spice, F. aromate.]