pinkroot

noun

1. the root of any of various plants belonging to the genus Spigelia, of the logania family, especially that of S. marilandica of the U.S., that is used as a vermifuge.
2. any of these plants.

noun

1. any of several loganiaceous plants of the genus Spigelia, esp S. marilandica, of the southeastern US, having red-and-yellow flowers and pink roots
2. the powdered root of this plant, used as a vermifuge
3. a fungal disease of onions and related plants resulting in stunted growth and shrivelled pink roots