1. The act or process of turning aside or moving to an alternate course. 2. A railroad switch. 3. bypass 4. A passage between two natural body channels, such as blood vessels, especially one created surgically to divert or permit flow from one pathway or region to another; a bypass. 5. shunting traffic around an accident. 6. urgent problems that society can no longer shunt aside. 7. To switch (a train or car) from one track to another. 8. To provide or divert (current) by means of a shunt. 9. To move or turn aside. 10. To become diverted by means of a shunt. Used of a circuit.