Definitions of reservoir:

  • noun:   tank used for collecting and storing a liquid (as water or oil)
  • noun:   lake used to store water for community use
  • noun:   anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies
    Example: "An infectious agent depends on a reservoir for its survival"
  • noun:   a large or extra supply of something
    Example: "A reservoir of talent"