roof tile
/ˈruːf tʌɪl/ /ˈrʊf tʌɪl/noun
A tile used as a roofing material, a roofing tile; = tile (also in non-count use); (especially in early use also) tiling for covering the top ridge of a roof; a ridge tiling.
Origin
Old English; earliest use found in Cleopatra Glossary. From roof + tile.