plate tracery

noun
  1. tracery, as in early Gothic architecture, formed of cut or pierced slabs of stone set on edge with the flat side outward.

Origin of plate tracery

First recorded in 1850–55
Also called perforated tracery.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for perforated tracery

Historical Examples of perforated tracery