barren area of land where little precipitation occurs From Wikiquote, the free quote compendium
A desert is a region of land that is very dry because of low rainfall amounts (precipitation), often having little coverage by plants, and in which streams dry up unless they are supplied by water from outside areas. The word is also used metaphorically to designate wastelands, barren regions and unproductive societies or situations.
Seamless Wikipedia browsing. On steroids.