thistledown

美 [ˈθɪs(ə)lˌdaʊn]
英 ['θɪs(ə)l.daʊn]
  • n.蓟种子冠毛
  • 网络蓟花的冠毛;西斯廷系列
thistledown
n.
1.
蓟种子冠毛a very light soft substance that contains thistle seeds and is blown from thistles by the wind