Blacktop has 4 different meanings across 2 categories:
Noun · Verb
a black bituminous material used for paving roads or other areas; usually spread over crushed rock
Asphalt concrete or similar bituminous black paving material used for the surface of roads (e.g., tarmacadam, tarmac).
coat with blacktop
"blacktop the driveway"
To pave with blacktop.