reservoir

noun

1. 1

   tank used for collecting and storing a liquid (as water or oil)

2. 2

   lake used to store water for community use

3. 3

   anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies

   an infectious agent depends on a reservoir for its survival

4. 4

   a large or extra supply of something

   a reservoir of talent