6 letters · 10 points in Scrabble
noun a paving material of tar and broken stone; mixed in a factory and shaped during paving
noun a paved surface having compressed layers of broken rocks held together with tar
verb surface with macadam
originClipping of tarmacadam, which is from tar + macadam (“crushed stones”). Originally a trademark owned by its inventor, Edgar Hooley.
Etymology from Wiktionary, CC BY-SA 3.0