Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
an American plant (Hydrastis canadensis) of the buttercup family, with large, round leaves and a thick, yellow rootstock, formerly much used in medicine
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A woodland plant (Hydrastis canadensis) of eastern North America, having small greenish-white flowers and a yellow root used in herbal medicine. Also called orangeroot.