oasis

Short definition from Wiktionary

Noun

1. 1
   A spring of fresh water, surrounded by a fertile region of vegetation, in a desert.
2. 2
   A quiet, peaceful place or situation separated from surrounding noise or bustle.
3. 3
   A place or situation of fruitfulness or abundance separated from surrounding barrenness or scarcity.

Proper noun

1. 1
   A census-designated place in Riverside County, California, United States.
2. 2
   A census-designated place in Elko County, Nevada, United States.
3. 3
   Acronym of Organization for the Advancement of Structured Information Standards.