star thistle

noun

1
: a widely naturalized spiny Old World knapweed (Centaurea calcitrapa) with purple flowers

called also caltrops

2
: any of various knapweeds related to the star thistle

Examples of star thistle in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And, Coffman said, removal of invasive plant species like star thistle is also underway. The Arizona Republic, 16 Feb. 2024 For tea drinkers, there’s raspberry blossom, Virginia wildflower and star thistle. Eliza McGraw, Washington Post, 12 Sep. 2023

Word History

First Known Use

1578, in the meaning defined at sense 1

Time Traveler
The first known use of star thistle was in 1578

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Cite this Entry

“Star thistle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/star%20thistle. Accessed 27 Mar. 2025.

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