tetterwort

/ˈtɛtərˌwɔrt/
noun
  1. A plant (Sanguinaria canadensis) with a red root and sap, historically used to treat skin conditions like ringworm or eczema.
    • In folk medicine, tetterwort was applied directly to skin sores.
    • The herbalist used tetterwort to make a salve for the patient's rash.
    • Tetterwort grows wild in the forests of eastern North America.
Synonyms