The term 'feudal lord' refers to a person of high social rank in the feudal system, a political and economic structure that was prominent in Europe during the Middle Ages. The crossword solutions for this term are 'LIEGE' (5 letters), 'seignior' (8 letters), 'SEIGNEUR' (8 letters), and 'mesne' (5 letters). 'LIEGE' is a term used to refer to a feudal lord's vassal, or a person who has sworn loyalty to them. 'Seignior' and 'SEIGNEUR' are both terms used to refer to a feudal lord, with the former being more commonly used in England and the latter being more commonly used in France. Lastly, 'mesne' is a term used to refer to a feudal lord's tenant, or a person who lives on their land and pays rent.