a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired size using crushers, used for macadam road construction.
tarmacadam 2
noundomain: artefact
Princeton WordNet [ver.3.1]
English
Definition
a paved surface having compressed layers of broken rocks held together with tar
a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired size using crushers, used for macadam road construction.