manorial system; manorialism
Historical term referring to the medieval European socioeconomic system centered on the lord's manor.
The manorial system of medieval Europe was based on the manor.
Under manorialism, peasants owed various obligations to the lord.
封建制 (feudalism) is a broader political and military system, whereas 領主制 specifically describes the economic and social organization around the manor.
Compound of 領主 (ryōshu, 'feudal lord') + 制 (-sei, 'system'). The term was coined in Japanese to translate the Western historical concept of manorialism.