rattlesnake weed

noun

1. a hawkweed, Hieracium venosum, of eastern North America, whose leaves and root are thought to possess medicinal properties.
2. a carrotlike weed, Daucus pusillus, of southern and western North America.
3. any of certain other plants, as an umbelliferous plant, Eryngium aquaticum.
4. rattlesnake plantain.

Word History and Origins

Origin of rattlesnake weed¹

An Americanism dating back to 1750–60