Definition of "yellowroot" []

• Xanthorhiza simplicissima, syn. X. apiifolia, a North American subshrub whose roots were formerly used to produce a yellow dye. (noun)

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• "And we got yellowroot and pounded the root and put it on these things."
• "The following Sunday being decidedly cooler, Lovey Mary was started off to Miss Viny's in quest of yellowroot."
• ""Miss Hazy sent me after some yellowroot," said Lovey Mary, listlessly."