Noun

1. a road that passes around something, such as a residential area
2. a circumvention
3. a section of pipe that conducts a fluid around some other fixture
4. an electrical shunt
5. an alternative passage created to divert a bodily fluid around a damaged organ; the surgical procedure to construct such a bypass

Verb

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