road metal(n = noun.substance) Array - broken rock used for repairing or making roads; Array
is a kind of rock, stone

access road, admiralty metal, aich's metal, alkali metal, alkaline metal, alkaline-earth metal, arterial road, babbitt metal, base metal, bearing metal, bell metal, block of metal, blond metal, bridle road, britannia metal, cheoplastic metal, frontage road, full metal jacket, fusible metal, gilding metal, grid metal, heavy metal, high road, hit the road, jinny road, kingston metal, liquid metal reactor, local road, macadam road, main road, metal, metal bar, metal detector, metal drum, metal filing, metal glove, metal money, metal plating, metal saw, metal screw, metal wood, middle of the road, misch metal, mitis metal, monel metal, monell metal, muntz metal, noble metal, on the road, post road, pot metal, precious metal, private road, ring road, road, road agent, road builder, road construction, road game, road gang, road hog, road map, road mender, road rage, road roller, road runner, road sense, road show, road surface, road test, road to damascus, royal road, scrap metal, service road, sheet metal, shot metal, side road, silk road, skid road, slip road, sparkle metal, take the road, terbium metal, trunk road, tula metal, type metal, white metal, wood's metal, yellow metal