from The Century Dictionary.
- noun In medieval architecture, a form of tracery in which the openings are cut or pierced in slabs of stone, as distinguished from ordinary tracery, which is constructed of assembled blocks.
Sorry, no etymologies found.
In its earlier forms it consisted merely of decorative openings, circles, and quatrefoils, pierced through slabs of stone (_plate-tracery_), filling the window-heads over coupled windows.
The absence of ornate decoration, the simplicity of the mouldings, and the plate-tracery of the triforium all indicate the first period of "Early