meadowsweet
noun
mead·ow·sweet ˈme-dō-ˌswēt 
-də-
1
: any of several spireas
especially : a North American native or naturalized spirea (such as Spiraea alba and S. latifolia)
2
: any of a genus (Filipendula) of herbs closely related to the spireas
Example Sentences
Recent Examples on the Web The newest perfume, launching in spring, incorporates meadowsweet and wild ivy, which visitors can smell in the flourishing herb garden out back. 
Serena Renner, National Geographic, 12 Mar. 2019 On McAvoy's property, five acres of wild raspberry and blueberry grew up and four acres of meadowsweet blossomed where forest had been cleared. Denise Coffey, Courant Community, 20 Dec. 2017 Cardinal flower and white meadowsweet are in bloom, and several trees lay on the ground, freshly felled by the resident beaver. James F. Mccarty, cleveland.com, 6 Aug. 2017 The creamy lotion, made with pure amber extract, relies on meadowsweet to tighten pores and absorb toxins and hyaluronic acid to stabilize the skin's water content. Sarah Cristobal, Harper's BAZAAR, 1 Sep. 2008 John’s wort and meadowsweet—on the beaker in her grave. Brigit Katz, Smithsonian, 9 Mar. 2017
Serena Renner, National Geographic, 12 Mar. 2019 On McAvoy's property, five acres of wild raspberry and blueberry grew up and four acres of meadowsweet blossomed where forest had been cleared. Denise Coffey, Courant Community, 20 Dec. 2017 Cardinal flower and white meadowsweet are in bloom, and several trees lay on the ground, freshly felled by the resident beaver. James F. Mccarty, cleveland.com, 6 Aug. 2017 The creamy lotion, made with pure amber extract, relies on meadowsweet to tighten pores and absorb toxins and hyaluronic acid to stabilize the skin's water content. Sarah Cristobal, Harper's BAZAAR, 1 Sep. 2008 John’s wort and meadowsweet—on the beaker in her grave. Brigit Katz, Smithsonian, 9 Mar. 2017 Word History
First Known Use
1530, in the meaning defined at sense 1