Water cooler

Britannica Dictionary definition of WATER COOLER. [count] : a machine that cools and stores water for drinking and that is usually found in offices and public buildings — often used to refer to the kind of informal conversations that people have in an office when they are not doing work. A water dispenser, known as water cooler (if used for cooling only), is a machine that dispenses and often also cools or heats up water with a refrigeration unit. It is commonly located near the restroom due to closer access to plumbing. a container or apparatus, as an insulated chest, in which something may be cooled or kept cool. anything that cools or makes cool; refrigerant.