oriel

noun2

1. •
   A large polygonal recess in a building, such as a bay window, forming a protrusion on the outer wall.

   • The middle window of the oriel before her, just caught and reflected back the crimson light and colour. The ground below looked bright and warm compared with the shade around. — 1831
2. •
   (no longer used) A small apartment next to a hall, used for dining.