Barnaby's thistle

noun

Bar·​na·​by's thistle
ˈbärnəbēz-
: any of several weeds of the genus Centaurea
especially : a European herb (C. solstitialis) adventive in the eastern U.S. and having a winged stem and tomentose leaves

Word History

Etymology

from Barnaby (day), the time of its flowering

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Cite this Entry

“Barnaby's thistle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Barnaby%27s%20thistle. Accessed 1 Feb. 2023.

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