seclusion

Short definition from Wiktionary

Noun

1. 1
   The act of secluding, shutting out or keeping apart.
2. 2
   The state of being secluded or shut out, as from company, society, the world, etc.; solitude.
3. 3
   A secluded, isolated or private place.
4. 4
   The mature phase of the extratropical cyclone life cycle.