flagstone (n.)

• adobe
• ashlar
• asphalt
• bitumen
• blacktop
• brick
• cement
• clinker
• cobble
• cobblestone
• concrete
• curb
• curbing
• curbstone
• ferroconcrete
• firebrick
• flag
• flagging
• flooring
• gravel
• kerb
• kerbstone
• macadam
• masonry
• mortar
• pavement
• paving
• roofing
• siding
• stone
• tarmacadam
• tile
• tiling
• walling
• washboard