(in the Middle Ages) the tenure of land by a knight on condition of performing military service.
（中世纪的）骑士服务（指骑士以服军役为条件获得的土地保有权）
Example sentencesExamples
By the 13th cent. the arrangements were unravelling as lords increasingly paid scutage rather than perform knight service and vassals tried to commute their own obligations.
His grandson, who appears in early thirteenth-century records as ‘John fitz Dermot’, was married to an Anglo-Norman woman, and held his lands by knight service.