| Noun | 1. | arnica - used especially in treating bruisestincture - (pharmacology) a medicine consisting of an extract in an alcohol solution Arnica montana - herb of pasture and open woodland throughout most of Europe and western Asia having orange-yellow daisylike flower heads that when dried are used as a stimulant and to treat bruises and swellings | |
| 2. | arnica - any of various rhizomatous usually perennial plants of the genus Arnicagenus Arnica - large genus of herbs of north temperate and arctic regions herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests | |
| 3. | arnica - an ointment used in treating bruisesointment, salve, unguent, balm, unction - semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation | |