1. A paved surface having compressed layers of broken rocks held together with tar
   "The plane taxied down the macadam before takeoff";
   - tarmacadam, tarmac
    
2. Broken stone used in macadamized roadways
   "The new road was surfaced with macadam"

1. Surface an area with tarmac
   "macadam the road";
   - macadamize, macadamise [Brit], tarmac

Derived forms: macadams, macadamed

Type of: coat, paved surface, pavement, paving, paving material, surface

Encyclopedia: Macadam, John