ˈärnikə, -nē-, dial -nəkē noun
Etymology: New Latin
1.
a. capitalized : a large genus of herbs (family Compositae) of the northern hemisphere having opposite leaves and flower heads that are discoid or have bright yellow rays — see leopard's bane 2
b. -s : a plant of the genus Arnica
2. -s
a. : the dried flower head of an herb ( Arnica montana ) and other plants of the genus Arnica used for stimulant and local irritant effect especially in the form of the tincture as an embrocation for bruises, sprains, and swellings
b. : the tincture made from arnica