arnica Meaning, Definition & Usage

  1. noun used especially in treating bruises
  2. noun any of various rhizomatous usually perennial plants of the genus Arnica
  3. noun an ointment used in treating bruises

WordNet

Ar"ni*ca noun
Etymology
Prob. a corruption of ptarmica.
Definitions
  1. (Bot.) 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. ✍ The tincture of arnica is applied externally as a remedy for bruises, sprains, etc.

Webster 1913