1. To reject someone/thing.
2. To banish someone/thing.
3. A line of high quality, Japanese-style kitchen knives made by Kershaw. The edges are tempered to a 16 degree angle, as opposed to a 23 degree angle most other kitchen knife makers use (Wusthof, for example), giving them a razor-sharp edge.
1 & 2. He was shunned to the island.
3. Alton Brown endorses Shun. Don't run with knives.
A name relating to a rare legendary person who is among the few who possess it.
Therefore a person with this name is automatically unique in at least one sense. They are often shunned due to the ridic differences between common names like James and Matthew.