trac‧e‧ry /ˈtreɪsəri/
noun (
plural traceries)
[uncountable and countable]1. technical the curving and crossing lines of stone in the upper parts of some church windows
2. literary an attractive pattern of lines that cross each other:
the delicate tracery of the bare branches against the sky [TahlilGaran] Dictionary of Contemporary English ▲