... friction and thus mitigate the greatest drawback of the vidraço [ polished limestone] which is to become ... azulejos derives from the Arabic az-zulayj and means “ polished stone”, exempli- fy how this imitation of ... friction and thus mitigate the greatest drawback of the vidraço [ polished limestone] which is to become ... azulejos derives from the Arabic az-zulayj and means “ polished stone”, exempli- fy how this imitation of ...