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"
the act of subjecting to experimental test in order to determine how well something works; "they agreed to end the testing of atomic weapons"
an examination of the characteristics of something; "there are laboratories for commercial testing"; "it involved testing thousands of children for smallpox"
a Japanese stringed instrument resembling a banjo with a long neck and three strings and a fretted fingerboard and a rectangular soundbox; played with a plectrum