[n] stratified stone that splits into pieces suitable as paving stones
flag
adobe, ashlar, asphalt, bitumen, bituminous macadam, blacktop, brick, bricks and mortar, cement, clinker, cobble, cobblestone, concrete, covering materials, curb, curbing, curbstone, edgestone, ferroconcrete, firebrick, flag, flagging, flooring, gravel, k