tobacco hornworm

noun

: an American hawk moth (Manduca sexta) whose large usually green larva is a hornworm that feeds on the leaves of plants of the nightshade family and especially tobacco and tomato

Examples of tobacco hornworm 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.
Certain caterpillars, like the tomato hornworm and tobacco hornworm, can destroy 90% of the foliage on tomato plants and can even feed on green fruit. Alexandra Jones, The Spruce, 3 June 2026 However, the tobacco hornworm caterpillar (Manduca sexta) has a very different strategy. Rupendra Brahambhatt, Interesting Engineering, 24 Aug. 2025 The team found that hungry tobacco hornworms (Manduca sexta) intensively attacked the non-emitting leaves, leaving the isoprene-emitting leaves alone. Jay Kakade june 30, New Atlas, 30 June 2025 Thus, something unique to the bite of the tobacco hornworm induces a rearrangement around the double bond of GLVs [Ars Technica]. Andrew Moseman, Discover Magazine, 26 Aug. 2010

Word History

First Known Use

circa 1909, in the meaning defined above

Time Traveler
The first known use of tobacco hornworm was circa 1909

Browse Nearby Words

Cite this Entry

“Tobacco hornworm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tobacco%20hornworm. Accessed 7 Jul. 2026.

More from Merriam-Webster on tobacco hornworm

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster