Definition of rattlesnake root
: any of various plants formerly believed to be distasteful to rattlesnakes or effective against their venom: as a : any of a genus (Prenanthes, especially P. altissima) of composite plants with small heads of drooping ligulate flowers b : seneca snakeroot
First Known Use of rattlesnake root
Seen and Heard
What made you want to look up rattlesnake root? Please tell us where you read or heard it (including the quote, if possible).