button snakeroot
noun
1
: blazing star sense 2a
2
: a perennial herb (Eryngium yuccifolium) of the carrot family native to the eastern half of the U.S. that has a basal rosette of bluish-green, fibrous, parallel-veined, swordlike leaves that may reach a length of 30 inches (76 centimeters) and small greenish-white flowers clustered in dense flower heads resembling thistle : rattlesnake master
Word History
First Known Use
1775, in the meaning defined at sense 1