moxa

moxa
[ˈmɒksə]
noun
  1. [mass noun]a downy substance obtained from the dried leaves of an Asian plant related to mugwort. It is burnt on or near the skin in Eastern medicine as a counterirritant
    (针灸用)艾绒,灼烙剂
  2. The plant is Crossostephium artemisioides, family Compositae
    该物质来自植物艾,菊科
语源
  1. late 17th cent.: from Japanese mogusa, from moe kusa 'burning herb'
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