the.com/tracery

Stone lace — where Gothic windows learned to stop holding up roofs and start showing off.

means The ornamental stonework that branches and curves within a window frame, forming patterns that hold glass in place — structural support reimagined as decoration.

from From 'trace,' meaning to draw or outline — ultimately from Latin 'trahere,' to draw or pull. Masons who designed these stone ribs worked from drawn patterns, tracing the curves on a floor or board before cutting stone to match, and by the 18th century the word had shifted from the act of drawing to the branching stonework itself.

origin
term coined centuries after the style itself
structural trick
ribs distribute weight so walls can vanish into glass
peak era
13th-14th century French and English cathedrals
two flavors
plate tracery came first, bar tracery got fancier
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