Definitions of shunt:

• noun:   implant consisting of a tube made of plastic or rubber; for draining fluids within the body
• noun:   a conductor having low resistance in parallel with another device to divert a fraction of the current
• noun:   a passage by which a bodily fluid (especially blood) is diverted from one channel to another

  Example: "An arteriovenus shunt"

• verb:   provide with or divert by means of an electrical shunt
• verb:   transfer to another track, of trains