
1) Gothic architecture
Found on
https://www.crosswordclues.com/clue/flushwork

In architecture, flushwork is the decorative combination on the same flat plane of flint and ashlar stone. If the stone projects from a flat flint wall then the term is proudwork, as the stone stands `proud` rather than being `flush` with the wall. Flushworked buildings belong to the Perpendicular style of English Gothic architecture. It is ch...
Found on
http://en.wikipedia.org/wiki/Flushwork

the decorative combination on the same flat plane of flint and ashlar stone. It is characteristic of medieval buildings, most of the survivors churches, in several areas of Southern England, but especially East Anglia. If the stone projects from a flat flint wall, the term is proudwork
Found on
http://en.wikipedia.org/wiki/Glossary_of_architecture

Sometimes flint is used with dressed stone to form patterns or inscriptions, the result of which is known as flushwork.
Found on
http://www.encyclo.co.uk/local/20935

Decorative patterns in flint flat against limestone, brick or carrstone, used to decorate the outside of some churches
Found on
http://www.encyclo.co.uk/local/20941

Decorative patterns in flint flat against limestone, brick or carrstone, used to decorate the outside of some churches
Found on
http://www.encyclo.co.uk/local/22200
No exact match found.