any of various prickly, composite plants having showy, purple flower heads, especially of the genera Cirsium, Carduus, or Onopordum.
any of various other prickly plants.
(sometimes not capital)
the emblem of this Order
membership of this Order
any of numerous plants of the genera Cirsium, Carduus , and related genera, having prickly-edged leaves, pink, purple, yellow, or white dense flower heads, and feathery hairs on the seeds: family Asteraceae (composites)
a thistle, or a representation of one, as the national emblem of Scotland
before 900; Middle English thistel, Old English; cognate with Dutch distel, German Distel, Old Norse thistill
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Adidas' iconic three stripes feature along the shoulders and down the sleeves and a purple and green thistle motif, symbolising Scotland's national flower, is on the reverse collar.
From BBC • Mar. 24, 2026
And since each sphere, though itself dead, seldom carries fewer than 150,000 fertile seeds, and sometimes as many as a quarter of a million, every tumbler leaves a vast wake of potential Russian thistle plants.
From The Wall Street Journal • Nov. 17, 2025
Researchers from the University of Cologne have found a new use for Cnicin, a substance produced in blessed thistle.
From Science Daily • Apr. 19, 2024
Within three months of taking milk thistle plus a statin, my numbers were down to normal.
From Seattle Times • Jan. 17, 2024
Now he came out of a nearby clump of mugwort and flowering thistle and joined Hazel under the thorn.
From "Watership Down: A Novel" by Richard Adams
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
