单词：thistledown
音标：['θisldaun] ；
n. 蓟花的冠毛
n. pappus of a thistle consisting of silky featherlike hairs attached to the seed-like fruit of a thistle
词型变化：名词复数形式 : thistledowns
thistledown的用法和样例：
例句
用作名词(n.)
- It is as light as thistledown.它和蓟花的冠毛一样轻。