gipsywort
/ˈdʒɪpsiˌwɜrt/
noun
- A European plant (Lycopus europaeus) of the mint family, with small white flowers and leaves that yield a black dye.
- Gipsywort grows wild along riverbanks and in damp meadows across Europe.
- The herbalist used gipsywort to make a natural black dye for fabrics.
- She identified the plant as gipsywort by its square stem and toothed leaves.