(law) the residence where you have your permanent home or principal establishment and to where, whenever you are absent, you intend to return; every person is compelled to have one and only one domicile at a time; "what's his legal residence?"
tank used for collecting and storing a liquid (as water or oil)
lake used to store water for community use
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"
a large or extra supply of something; "a reservoir of talent"