mac·ad·am
noun/məˈkædəm/
/məˈkædəm/
[uncountable]- a road surface made of layers of broken stones, mixed with tar
Topics Transport by car or lorryc2柏油碎石路面 Word Originearly 19th cent.: named after John L. McAdam (1756–1836), the British surveyor who advocated using this material.