tarmacadam

noun

tar·​mac·​ad·​am ˌtär-mə-ˈka-dəm 

1

: a pavement constructed by spraying or pouring a tar binder over layers of crushed stone and then rolling

2

: a material of tar and aggregates mixed in a plant and shaped on the roadway

Word History

First Known Use

1882, in the meaning defined at sense 1