arnica

 
Pronunciation: /ˈɑːnɪkə/

noun

  • a plant of the daisy family which bears yellow, daisy-like flowers, found in cooler regions of the northern hemisphere.
    • Genus Arnica, family Compositae: many species, especially mountain tobacco (A. montana) of central Europe
  • [mass noun] a preparation of the arnica plant used medicinally, especially for the treatment of bruises.

Origin:

mid 18th century: modern Latin, of unknown origin