asphalt

Asphalt is the black, tarry material that's often used to pave roads or fill in potholes. Your neighbor might decide to coat his driveway in asphalt.

Asphalt is a popular substance for paving roads, parking lots, and even airport runways, because it's sturdy and easy to repair. When old asphalt roads are torn up or repaved, the asphalt can be reused in new highway or road projects. Asphalt is usually manufactured from oil, or petroleum, but there are more ecologically friendly ways to make it, including using molasses, rice, or potato starch.

Definitions of asphalt
  1. noun
    a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons
    synonyms: mineral pitch
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    type of:
    mineral
    solid homogeneous inorganic substances occurring in nature having a definite chemical composition
  2. noun
    mixed asphalt and crushed gravel or sand; used especially for paving but also for roofing
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    type of:
    pavement, paving, paving material
    material used to pave an area
  3. verb
    cover with tar or asphalt
    asphalt the driveway”
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    type of:
    pave
    cover with a material such as stone or concrete to make suitable for vehicle traffic
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