thimbleweed / ˈθɪm bəlˌwid /

📖毕业后词汇顶针草顶嘴草顶针花顶戴草

thimbleweed 的定义

n. 名词 noun
  1. any of several plants having a thimble-shaped fruiting head, especially either of two white-flowered North American plants, Anemone riparia or A. virginiana.