water cooler
noun
1- a dispenser of cooled drinking water, typically used in places of work（尤指工作场所使用的）冷饮水机。
1.1
- as modifier US informal denoting the type of informal conversation or socializing among office workers that takes place in the communal area in which such a dispenser is located〈美, 非正式〉（办公室职员的谈话或社交）冷饮水机边进行的：
a water-cooler conversation.
冷饮水机边的对话。