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Demesne: A manor house with lands adjacent to it not let out to tenants. At the time of the Domesday Survey it meant land whose produce was to devoted to the lord rather than kept by his tenants.
Domesday Survey: An extensive survey of England carried out by King William's officials in 1086 to create a detailed record of land ownership and value before and after the Norman Conquest. (see also Herefordshire and the Domesday Survey.)
Drawbridge: Wooden bridge, which can be raised towards a gateway by means of chains and ropes. When upright it forms a solid door to the castle.