goldenseal
noun
gold·en·seal ˈgōl-dən-ˌsēl 
: a perennial North American herb (Hydrastis canadensis) of the buttercup family with large leaves and a thick knotted yellow rhizome sometimes used medicinally
Example Sentences
Recent Examples on the Web Yenzirbo used a makeshift metal digger crafted from an old golf club to point out a four-lobed ginseng plant growing on a steep slope among a mosaic of other medicinal plants—black cohosh, goldenseal, nettle. 
Greg Kahn, National Geographic, 9 Jan. 2020 My own research also revealed that goldenseal does have the potential to interact with other drugs. Allyson Byers, SELF, 1 June 2018
Greg Kahn, National Geographic, 9 Jan. 2020 My own research also revealed that goldenseal does have the potential to interact with other drugs. Allyson Byers, SELF, 1 June 2018 Word History
First Known Use
1839, in the meaning defined above
Medical Definition
goldenseal
noun
gold·en·seal ˈgōl-dən-ˌsēl
1
: a perennial American herb of the genus Hydrastis (H. canadensis) with a thick knotted yellow rootstock and large rounded leaves
2
: hydrastis sense 2