bypass

Short definition from Wiktionary

Noun

1. 1
   A road that passes around something, such as a residential area or business district.
2. 2
   A replacement road for obsolete road that is no longer in use because devastating natural disasters (earthquakes, tsunamis, landslides).
3. 3
   The act of going past or around.
4. 4
   A section of pipe that conducts a fluid around some other fixture.
5. 5
   An electrical shunt.
6. 6
   An alternative passage created to divert a bodily fluid around a damaged organ; the surgical procedure to construct such a bypass.

Verb

1. 1
   To avoid an obstacle etc, by constructing or using a bypass.
2. 2
   To ignore the usual channels or procedures.