Definitions

1. past participle

having a surface of compacted small stones or gravel, typically covered with a layer of tar or bitumen, used for road surfaces

“The tarmacked road stretched for miles, connecting the small towns.”

2. adjective

relating to or consisting of a surface of compacted small stones or gravel, typically covered with a tar or bitumen layer

“The tarmacked area provided a smooth surface for the skate park.”