A Glossary: O

Oriel or Oriel Window

Angers, France (Castles of the World)

Projecting room on an upper floor, later an upper-floor bay window.

Oubliette

© 2001 Lise Hull Castles of Britain

A tiny windowless chamber where prisoners were left to die reached by a trap door in the ceiling from the guard room above. It was usually a narrow cylindrical shape.

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