SEIGNIORY Meaning of SEIGNIORY in English [ 'seɪnjəri ](also seigneury ) ■ noun ( plural seigniories ) the position, authority, or domain of a feudal lord.OriginME: from OFr. seignorie , from seigneur (see seigneur ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004