herb
1 Americannoun
noun
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a seed-bearing plant whose aerial parts do not persist above ground at the end of the growing season; herbaceous plant
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any of various usually aromatic plants, such as parsley, rue, and rosemary, that are used in cookery and medicine
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( as modifier )
a herb garden
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a slang term for marijuana
Other Word Forms
Etymology
Origin of herb
1250–1300; Middle English herbe < Old French erbe, herbe < Latin herba
Explanation
What do food, medicine, and perfume have in common? Well, they all can be created from herbs. An herb is a plant that has a soft rather than a woody stem, and it tends to have a unique taste or smell. There are many kinds of plants, but one that you've likely seen mentioned on a menu or ad for a medical treatment is the herb. Herbs are distinguished from other plants by their stem, which does not become permanent and woody; instead, it stays soft. Many herbs are used in cooking, such as basil and thyme, because they add flavor to foods. Many herbs, like ginseng and chamomile, are used in tea and are believed to be good for your health.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Rather than simply delaying further loss, the herb appears to encourage regrowth by influencing multiple growth factors and signaling pathways involved in the hair cycle.
From Science Daily • Feb. 9, 2026
There’s a candy dish in the lobby, which is awash in hues of cream and white, offering visitors gummies infused with passion fruit and the calming herb ashwagandha.
From Los Angeles Times • Feb. 2, 2026
AGZ contains the herb ashwagandha along with magnesium, the spice saffron and more than a dozen other ingredients.
From The Wall Street Journal • Dec. 29, 2025
So, Meghan began experimenting with the herb, “drying all the different varieties she was growing,” and using it to infuse everything from oils to honey.
From MarketWatch • Dec. 4, 2025
He told Odysseus he knew a herb which could save him from Circe’s deadly art.
From "Mythology: Timeless Tales of Gods and Heroes" by Edith Hamilton
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.