Definition of "goldenseal" [goldenseal]

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Echinacea raises white blood cells to fight the infection and goldenseal is a natural antibiotic."
• "If you're buying goldenseal in one health food store, it may be very different from what you're buying that's called goldenseal from another place."
• "Herbal varieties may contain an immune booster, such as goldenseal root or echinacea; licorice, which is antiviral and antibacterial; or marshmallow herb, which helps produce the protective mucous in your throat."