Definition of proletaire in English:
proletaire
(also prolétaire)
noun ˌprəʊlɪˈtɛːˌprɒlɪˈtɛː
rare 1A member of a low or poor social class.
2Economics. A person who is dependent on his or her own labour for subsistence; a worker. Compare "proletariat".
Origin
Late 18th century. From French prolétaire proletary.