Domesday Book is largely a description of landed estates, usually called manors. The word manor is one of the most common in Domesday Book yet its precise meaning is unclear and the subject of dispute. To avoid ambiguity, historians often to prefer the use of neutral terms such as holding or entry when referring to Domesday's descriptions of rural properties.

The main formulae and concepts employed in describing manors and their dependencies are:

See also codes for manors.