| 2. | omnibus - a vehicle carrying many passengers; used for public transport; "he always rode the bus to work"roof - protective covering on top of a motor vehicle school bus - a bus used to transport children to or from school window - a transparent opening in a vehicle that allow vision out of the sides or back; usually is capable of being opened fleet - group of motor vehicles operating together under the same ownership passenger, rider - a traveler riding in a vehicle (a boat or bus or car or plane or train etc) who is not operating it | |