RESERVOIR

/ˈɹɛz.ə.vwɑː(ɹ)/ ► audio Scrabble 12 Words With Friends 13

Definition

noun a large or extra supply of something.
noun lake used to store water for community use. — synonyms: artificial_lake, man-made_lake
noun tank used for collecting and storing a liquid (as water or oil).
noun anything (a person or animal or plant or substance) in which an infectious agent normally lives and multiplies. — synonyms: source