What does fountain soda mean?

Soda fountain is a term referring to the carbonated drink dispensers found in restaurants, concession stands and other locations such as convenience stores. These devices combine syrup (commonly dispensed from a Bag-In-Box), carbon dioxide, and water to make soft drinks. By extension, the term also may refer to a small eating establishment, common in the late 19th and early 20th centuries, often within a drug store or other business, serving soda beverages, ice cream, and sometimes light meals.  more