ARNICA
Ar"ni*ca, n. Etym: [Prob. a corruption of ptarmica.] (Bot.)
Defn: A genus of plants; also, the most important species (Arnica montana), native of the mountains of Europe, used in medicine as a narcotic and stimulant.
Note: The tincture of arnica is applied externally as a remedy for bruises, sprains, etc.
ARNICIN
Ar"ni*cin, n. Etym: [See Arnica.] (Chem.)
Defn: An active principle of Arnica montana. It is a bitter resin.
ARNICINE
Ar"ni*cine, n. (Chem.)
Defn: An alkaloid obtained from the arnica plant.
ARNOT; ARNUT
Ar"not, Ar"nut, n. Etym: [Cf. D. aardnoot, E. earthut.]
Defn: The earthnut. [Obs.]
ARNOTTO
Ar*not"to, n.