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English definition of “thistledown”

thistledown

noun [U]     /ˈθɪs.l̩.daʊn/
the mass of thin, soft, white threads that are joined to thistle seeds and help them to be blown through the airFruits and seeds and their parts
(Definition of thistledown noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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