WordReference Random House Unabridged Dictionary of American English © 2025
tar•mac•ad•am
(tär′mə kad′əm),USA pronunciation n.
- Civil Engineeringa paving material consisting of coarse crushed stone covered with a mixture of tar and bitumen.
- tar1 + macadam 1880–85
'tarmacadam' also found in these entries (note: many are not synonyms or translations):