名詞 macadam:

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

mac.ad.am

n.（名詞）
Pavement made of layers of compacted broken stone, now usually bound with tar or asphalt.
碎石路：用幾層集中起來的碎石鋪筑的人行道，現(xiàn)在一般與焦油或瀝青混合

來源：
After John Loudon McAdam (75'-83'), Scottish civil engineer
源自約翰·勞頓 麥克亞當 (75'-83'年），蘇格蘭土木工程師