lazaret /ˌlæzəˈɹɛt/ noun4 •(historical) A place reserved for people with infectious diseases (especially leprosy or plague) to live on a long-term basis.I woke the next morning in a lazaret, a long, high-ceilinged room where we, the sick, the injured, lay upon narrow beds. — 1980 •(historical) A building such as a hospital, or occasionally a ship, used to isolate sick people to prevent the spread of infectious diseases; a quarantine.The liver is the lazaret of bile, / But very rarely executes its function — 1819 •Synonym of lazaretto. •A place at the front of the tweendecks of a merchant ship where provisions are stored. formslazarets