1. 
   Ringwork
   Circular earthwork of bank and ditch.
   Found op http://www.encyclo.co.uk/local/20018
   
   
2. 
   Ringwork
   circular earthwork of bank and ditch
   Found op http://www.castlexplorer.co.uk/glossary.php
   
   
3. 
   Ringwork
   A type of circular earthwork consisting of rampart and external ditch broken by an entrance. Constructed mainly by the Normans in Britain. Romanesque In England called Norman, a style of architecture influenced by the Roman. Current in the eleventh to twelfth centuries. Some Anglo-Saxon architecture...
   Found op http://www.digital-documents.co.uk/archi/gloschur.htm
   
   
4. 
   ringwork
   small enclosure with a high rampart around it
   Found op http://www.castles-of-britain.com/glossary.htm
   
   
5. 
   Ringwork
   A ringwork is a form of fortified defensive structure, usually circular or oval in shape. Ringworks are essentially motte-and-bailey castles minus the motte. Defences were usually earthworks in the form of a ditch and bank surrounding the site. Ringworks originated in Germany in the 10th century as...
   Found op http://en.wikipedia.org/wiki/Ringwork
   
   
6. 
   ringwork
   1) Circular earthwork of bank and ditch
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/ringwork/1
   
   

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