1.NounAsphalt concrete or similar bituminous black paving material used for the surface of roads (e.g., tarmacadam, tarmac). .mw-parser-output .defdate{font-size:smaller}
2.NounA road so paved.
3.NounA paved area on a schoolground reserved for recess activities, often doubling as a parking lot.
4.VerbTo pave with blacktop.
"The county first blacktopped that road decades ago"