tormentil

/ˈtɔːrməntɪl/
noun
  1. A low-growing wild plant with yellow flowers and a root used in herbal medicine and for dyeing.
    • Herbalists sometimes use tormentil root to make a tea for digestive issues.
    • The bright yellow flowers of tormentil bloom from late spring to early autumn.
    • Tormentil grows commonly in meadows and along woodland paths.