macadam

名词 macadam:

1. broken stone used in macadamized roadways
2. a paved surface having compressed layers of broken rocks held together with tar
   同义词：tarmacadam, tarmac

mac.ad.am

n.（名词）
Pavement made of layers of compacted broken stone, now usually bound with tar or asphalt.
碎石路：用几层集中起来的碎石铺筑的人行道，现在一般与焦油或沥青混合

来源：
After John Loudon McAdam (75'-83'), Scottish civil engineer
源自约翰·劳顿 麦克亚当 (75'-83'年），苏格兰土木工程师