Including all or a great number; covering or designed to cover many different cases or things; embracing numerous distinct objects: as, an omnibus bill, clause, or order.n. A long-bodied four-wheeled vehicle for carrying passengers, generally between two fixed stations, the seats being arranged lengthwise, with the entrance at the rear.n. In glass-making, a sheet-iron cover for articles in an annealing-arch, to protect them from drafts of air.n. Same as omnibus-box.n. A man or boy who assists a waiter in a hotel or restaurant, removes the soiled dishes, and brings new supplies.