ClipArt ETC
"In architecture the slab or plinth which forms the upper member of the capital of a column or pillar, and upon which rests, in classic styles, the lower surface of the achitrave."—Wright, 1902

Abacus

"In architecture the slab or plinth which forms the upper member of the capital of a column or pillar,…

"Sepulchral or monumental, large plates of brass inlaid in polished slabs of stone, and usually exhibiting the figure of the person intended to be commemorated, either in a carved outline on the plate or in the form of the plate itself. In place of the figure we sometimes find an ornamented cross. The earliest example of these monumental slabs now existing in England is that on the tomb of Sir John D'Abernon at Stoke D'Abernon Surrey." — Winston's Encyclopedia, 1919

Brasses

"Sepulchral or monumental, large plates of brass inlaid in polished slabs of stone, and usually exhibiting…

"Pavement slab from the palace of Koyunjik." —D'Anvers, 1895

Pavement slab

"Pavement slab from the palace of Koyunjik." —D'Anvers, 1895

A thin flat slab of fired clay used for roofing

Roofing Tile

A thin flat slab of fired clay used for roofing