proletariat
/ˌprəʊlɪˈteərɪət/( <古> 亦作proletariate)
noun
treated as sing. or pl.
1- workers or working-class people, regarded collectively (often used with reference to Marxism)工人; ［总称］工人阶级（常用于马克思主义）：
the growth of the industrial proletariat.
产业工人的增长。
1.1
- the lowest class of citizens in ancient Rome（古罗马公民中的）最下层阶级。
词源
mid 19th cent.: from French prolétariat,from Latin proletarius （see PROLETARIAN）.