Source : WordNet®

tarmac
     n 1: a paving material of tar and broken stone; mixed in a
          factory and shaped during paving [syn: {tarmacadam}]
     2: a paved surface having compressed layers of broken rocks
        held together with tar [syn: {tarmacadam}, {macadam}]
     v : surface with macadam;  "macadam the road" [syn: {macadamize},
          {macadamise}]