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Related topics: Roads, Industryma·cad·am /məˈkædəm/ noun [uncountable] TTRTIa road surface made of a mixture of broken stones and tar or asphalt 柏油碎石路面 SYN British English tarmacExamples from the Corpusmacadam• Keep the roller wet so it doesn't pick up lumps of macadam.• I was blown to one side off the macadam, then dragged back and crashed down on the other.Origin macadam (1800-1900) John Loudon Macadam (1756-1836), Scottish engineer who invented itma·cad·am nounChineseSyllable road of Corpus mixture a a surface of made |