WordWeb Online

1. A large or extra supply of something
   "a reservoir of talent"
    
2. Lake used to store water for community use; a lake (natural or artificial) used to store water and used as a source of water
   - artificial lake, man-made lake
    
3. Tank used for collecting and storing a liquid (as water or oil)
    
4. Anything (a person, animal, plant or substance) in which an infectious agent normally lives and multiplies
   "an infectious agent depends on a reservoir for its survival";
   - source

Derived forms: reservoirs

Type of: lake, storage tank, supply, tank, thing

Part of: water, water supply, water system

Encyclopedia: Reservoir, Western Australia