peasant (n.)youdaoicibaDictYouDict[peasant 词源字典]
early 15c., from Anglo-French paisant (mid-14c.), Old French paisent "local inhabitant" (12c., Modern French paysan), earlier paisenc, from pais "country, region" + Frankish suffix -enc "-ing."

Pais is from Late Latin pagensis "(inhabitant) of the district," from Latin pagus "country or rural district" (see pagan). As a style of garment in fashion (such as peasant blouse) from 1953.[peasant etymology, peasant origin, 英语词源]