1
: any of several aromatic herbs (genus Ocimum) of the mint family
especially : sweet basil
2
: the dried or fresh leaves of a basil used especially as a seasoning

Examples of basil in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Handley notes that basil’s strong scent helps keep many insects away from homes, including flies, mosquitoes, aphids, and thrips. Louise Parks, Martha Stewart, 21 Aug. 2026 For another spin on pesto, try Roasted Red Pepper Pesto or instead of basil try other herbs or greens like carrot tops! Better Homes & Gardens, 19 Aug. 2026 Fresh Herbs Herbs like basil, cilantro and parsley lose their flavor and texture when frozen as-is. Toria Sheffield, PEOPLE, 18 Aug. 2026 For instance, substitute other kinds of basil or soft green herbs for the ones called for here. Kate Bradshaw, Mercury News, 18 Aug. 2026 See All Example Sentences for basil

Word History

Etymology

Middle English basyl, basyle, shortening (perhaps by confusion with Middle French basile "basilisk") of Middle French basilic or its source, Medieval Latin basilicon, borrowed from Greek basilikón (for presumed basilikòn phytón "royal plant"), noun derivative from neuter of basilikós "royal" — more at basilica

Note: The word basilikón as a name for a plant or herb is marginally attested in ancient and early post-classical Greek, the usual word for what is presumed to be Ocimum basilicum in Greek being ṓkimon. The identity of a lákhanon basilikón ("royal herb") in the pseudo-Aristotelian De plantis (2nd century b.c.) is uncertain. The lexicon of Hesychius (5th-6th centuries a.d., incorporating much ancient material) glosses ṓkimon as "fragrant herb, called basilikón" ("botánē euṓdēs, tò legómenon basilikón").

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of basil was in the 15th century

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Cite this Entry

“Basil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basil. Accessed 23 Aug. 2026.

Kids Definition

basil

noun
bas·​il
ˈbaz-əl
ˈbāz-
ˈbas-
ˈbās-
: any of several plants of the mint family
especially : sweet basil

Biographical Definition

Saint circa 329–379 the Great church father; bishop of Caesarea

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