- fifth: n. 1.〔美国〕五分之一加仑(瓶) ...
- estate: n. 1.财产；遗产；房地产。 2. ...
- the fifth estate: “第五等级”, 科学界
The term "Fifth Estate" has no fixed meaning, but is used to describe any class or group in society other than the clergy (First Estate), the nobility (Second Estate), the commoners (Third Estate), and the press (Fourth Estate).Random House Dictionary It has been used to describe civil society (including trade unions) and the poor or the proletariat.