apron (architecture)

File:BurfordBaroque.jpg has aprons beneath its five upper windows.]]

An apron is a raised section of ornamental stonework below a window ledge, stone tablet, or monument.Pevsner, p872.

Aprons were used by Roman engineers to build Roman bridges. The main function of apron was to surround the feet of the piers.{{Cite book |last=Ruddock |first=Ted |url=https://books.google.com/books?id=ulsPEAAAQBAJ&dq=History+of+Roman+bridges&pg=PR21 |title=Masonry Bridges, Viaducts and Aqueducts |date=2017-05-15 |publisher=Routledge |isbn=978-1-351-91928-9 |pages=22 |language=en}}