Embanked enclosure, generally circular in plan. (Kenyon, John R. Medieval Fortifications, 211)
Circular earthwork of bank and ditch.
An earthwork castle which has no identifiable strongpoint or motte.
an earthen fortification similar to a motte but consisting of an area encircled with lower earthen walls and an enclosing ditch, topped by timber palisades. The photo shows Caerau Castle Ringwork.