noun. ['məˈkædəm'] a paved surface having compressed layers of broken rocks held together with tar.
1. Adjective A cheaper option is macadam, essentially crushed stone compacted tightly and sealed with liquid asphalt. 2. Noun, singular or mass Tar and chip, also known as a macadam, is another inexpensive dirt driveway overlay.
noun. ['məˈkædəm'] broken stone used in macadamized roadways.