A box used to keep provisions cool

A dispenser of cooled drinking water. / (figuratively) A location in the workplace where employees gather to gossip.

Of the nature of things discussed around a water cooler.

A type of cooling device that uses water as the heat transfer medium.

Anything which cools. / An insulated bin or box used with ice or freezer packs to keep food or beverages cold while picnicking or camping. / A device for refrigerating dead bodies in a morgue.

comparative form of cool: more cool

In a cool, unpanicked or collected manner. / (dated) With calm impudence.

(obsolete) coolish; somewhat cool in temperature

A food storage cabinet keeping its contents cool by evaporation of water from sides made of hessian.

A medium, usually fluid, used to draw heat from an object.