tonneau

noun

ton·​neau ˈtä-ˌnō How to pronounce tonneau (audio) tə-ˈnō How to pronounce tonneau (audio)
plural tonneaus
1
a
: a rear seating compartment of an automobile
also : the entire seating compartment
2
: a shape of watch case or dial resembling a barrel in profile

Examples of tonneau 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.
There are four models to choose from, with tonneau or round cases ranging from 43 mm to 33 mm, with or without diamonds, priced from $14,800 to $22,900. Carol Besler, Robb Report, 6 Feb. 2026 Is the Tonneau Tent that much more convenient than carrying a basic $100 to $600 pickup truck tent and installing a standard tonneau? New Atlas, 9 Jan. 2026 When lowered, the roof folds neatly under a tonneau behind the car’s two seats. Alistair Charlton, Forbes, 25 Mar. 2025 The magazine re-ran the tonneau testing at 65 miles per hour instead and saw significant gains. Bradley Brownell / Jalopnik, Quartz, 19 Mar. 2024 See All Example Sentences for tonneau

Word History

Etymology

French, literally, tun, from Old French tonel — more at tunnel entry 1

First Known Use

1901, in the meaning defined at sense 1a

Time Traveler
The first known use of tonneau was in 1901

Browse Nearby Words

Cite this Entry

“Tonneau.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tonneau. Accessed 15 Feb. 2026.

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