1. semisolid bituminous substance: a brownish black solid or semisolid substance. Source: oil-bearing rocks, byproduct of petroleum distillation. Use: paving, waterproofing, fungicides.
2. material used for surfacing roads: paving material composed mainly of asphalt and gravel that hardens on cooling and is used for making roads and sidewalks
transitive verb (past and past participleas·phalt·ed, present participleas·phalt·ing, 3rd person present singularas·phalts)
Definition:
cover something with asphalt: to surface a roadway, sidewalk, or other area with asphalt
