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rattlesnake weed

noun

a hawkweed, Hieracium venosum, of eastern North America, whose leaves and root are thought to possess medicinal properties.

a carrotlike weed, Daucus pusillus, of southern and western North America.

any of certain other plants, as an umbelliferous plant, Eryngium aquaticum.

rattlesnake plantain.

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Origin of rattlesnake weed

An Americanism dating back to 1750–60

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019