Definition of tonneau
1a : a rear seating compartment of an automobile; also : the entire seating compartmentb : tonneau cover
2 : a shape of watch case or dial resembling a barrel in profile
Recent Examples of tonneau from the Web
The bed includes the industry-first Utili-track bed channel system, including dual lockable in-bed storage boxes that are accessible from inside the bed without having to remove a camper top or tonneau cover.
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