膽南星 [胆－－]

Jyutping daam2 naam4 sing1
Pinyin dǎn nán xīng

Definitions (Wiktionary)
  1. noun
    Rhizome of Jack-in-the-pulpit (Arisaema) and bile. (A prepared substance used in traditional Chinese medicine to reduce spasms, cramps, facial paralysis, and stroke.)