Noun
1. a vehicle carrying many passengers; used for public transport;
"he always rode the bus to work"2. the topology of a network whose components are connected by a busbar
3. an electrical conductor that makes a common connection between several circuits;
"the busbar in this computer can transmit data either way between any two components of the system"4. a car that is old and unreliable;
"the fenders had fallen off that old bus"