What is another word for "flagstone"?

Roget's Thesaurus (1911) lists these synonyms for "flagstone": bed, board, coat, course, cover, covering, cut, dess, escarpment, eschar, film, flag, flake, floor, foil, integument, lamella, lamina, layer, leaf, membrane, nest, onion, pare, peel, pellicle, plank, plate, platter, rasher, scale, scaliness, shave, shaving, sheet, shive, slab, slice, stage, story.