water cooler

Short definition from Wiktionary

Noun

1. 1
   A dispenser of cooled drinking water.
2. 2
   A location in the workplace where employees gather to chat or gossip.
3. 3
   A type of cooling device that uses water as the heat transfer medium.
4. 4
   Alternative form of water cooler.

Adjective

1. 1
   Of the nature of things discussed around a water cooler.
2. 2
   Alternative form of water cooler.