[as-fawlt or, especially Brit., -falt] 
| 1. | any of various dark-colored, solid, bituminous substances, native in various areas of the earth and composed mainly of hydrocarbon mixtures. |
| 2. | a similar substance that is the by-product of petroleum-cracking operations. |
| 3. | a mixture of such substances with gravel, crushed rock, or the like, used for paving. |
| 4. | to cover or pave with asphalt. |
| 5. | of, pertaining to, or containing asphalt: asphalt tile. |
| asphalt (ās'fôlt') Pronunciation Key
A thick, sticky, dark-brown mixture of petroleum tars used in paving, roofing, and waterproofing. Asphalt is produced as a byproduct in refining petroleum or is found in natural beds. |