Wikipedia
Roman brick
Roman brick can refer either to a type of brick used in Ancient Roman architecture and spread by the Romans to the lands they conquered; or to a modern type inspired by the ancient prototypes. In both cases, it characteristically has longer and flatter dimensions than those of standard modern bricks.
Usage examples of "roman brick".
It was built of the flat Roman brick three stories high, with windows and balconies, some with wash hanging from them.