Definition of "herbal" []

• Of, relating to, or containing herbs. (adjective)
• A book about plants and herbs, especially those that are useful to humans. (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.

• "The herbal is rich in iodine compounds that stimulate thyroid gland functions."
• "The leaves and the roots have been used in herbal preparations to induce vomiting."
• "Get ready for the long winter dry, cold haul with simple knowledge on how to identify common wild plants that can be used in herbal remedies."