1. Noun: A fantasy vehicle designed to help Mitt Romney appeal to the average American. It was designed for Romney after he saw an Amish family riding though central Pennsylvania. The vehicle combines the humble nature of an nineteenth century carriage with the convenience of using blue collar workers as draft animals.
2. When preceding the word "bill," Romnibus refers to a large piece of legislation that helps facilitate vulture capitalism.
Etymology: Derives from Romney and "omnibus," a common mode of transportation in the nineteenth century and a legislative bill.
Person A: What is Mitt Romney doing riding in cart pulled by auto workers?
Person B: That's his new Romnibus campaign vehicle.
Person A: Wow. He doesn't really understand America does he? And those autoworkers look like they're on the verge of death.