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lady's-thistle

[ley-deez-this-uh l]
noun
  1. a composite plant, Silybum marianum, of the Mediterranean region, having glossy, spiny leaves and purplish-red flower heads.
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Origin of lady's-thistle

First recorded in 1545–55
Also called holy thistle, milk thistle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018