[pingk-root, -roo t]
  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.

Origin of pinkroot

An Americanism dating back to 1755–65; pink1 + root1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pinkroot

Historical Examples of pinkroot

British Dictionary definitions for pinkroot


  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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012