Simple Definition of thistle

from our Learner's Dictionary

thistle

noun

plural thistles
: a wild plant that has sharp points on its leaves and purple, yellow, or white flowers

Cite this Entry

“Thistle.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/thistle. Accessed 19 Jun. 2026.

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