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Russian thistle

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noun
  1. a saltwort, Salsola kali tenuifolia, that has narrow, spinelike leaves, a troublesome weed in the central and western U.S.
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Origin of Russian thistle

An Americanism dating back to 1890–95
Also called Russian tumbleweed.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018