tracery - In architecture, branching, ornamental stonework, generally in a window, where it supports the glass. Tracery is particularly characteristic of Gothic architecture. Example:
The tracery in a rose window of Washington Cathedral, Washington, DC. This graphic displays four different photos-- they amount to a zoom into the tracery.
Also see fenestration, foil, quatrefoil, and stained glass.
rose window - Large circular windows of tracery and stained glass found in Gothic cathedrals. Also called a wheel window. Examples:
transept - An aisle between the apse and nave. It cuts across the nave and side aisles to form a cross-shaped floor plan. Also see architecture, cathedral, and Gothic.
nave - The major, central part of a church where the congregation gathers. It leads from the main entrance to the altar and choir, and is usually flanked by side aisles. An example:
A photo of the nave of the cathedral of Notre Dame in Paris, France, as seen up...