RESERVOIR
reservoir
(noun) tank used for collecting and storing a liquid (as water or oil)
reservoir, artificial lake, man-made lake
(noun) lake used to store water for community use
reservoir, source
(noun) 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”
reservoir
(noun) a large or extra supply of something; “a reservoir of talent”
Source: WordNet® 3.1
Etymology
Noun
reservoir (plural reservoirs)
A place where anything is kept in store
A large natural or artificial lake used as a source of water supply.
A small intercellular space, often containing resin, essential oil, or some other secreted matter.
A supply or source of something.
A species that acts as host to a zoonosis when it is not causing acute illness in other susceptible species.
Source: Wiktionary
Res"er*voir` (rz"r-vwr`;277), n. Etym: [F. réservoir, fr. LL.
reservatorium. See Reservatory.]
1. A place where anything is kept in store; especially, a place where
water is collected and kept for use when wanted, as to supply a
fountain, a canal, or a city by means of aqueducts, or to drive a
mill wheel, or the like.
2. (Bot.)
Definition: A small intercellular space, often containing Receiving
reservoir (Water Works), a principal reservoir into which an aqueduct
or rising main delivers water, and from which a distributing
reservoir draws its supply.
Source: Webster’s Unabridged Dictionary 1913 Edition