tonneau Syllabification: (ton·neau)Pronunciation: /təˈnō, ˈtänō/Definition of tonneau noun (plural tonneaus or tonneaux /təˈnōz, ˈtänōz/) the part of an automobile, typically an open car, occupied by the back seats. short for tonneau cover.tonneau in other Oxford dictionaries Definition of tonneau in the British & World English dictionary
