as·phalt 
(ăsfôlt′)
(ăsfôlt′)n.
1. See bitumen.
2. A mixture of bitumen with crushed stone gravel or sand, used for paving or roofing.
tr.v. as·phalt·ed, as·phalt·ing, as·phalts
To pave or coat with asphalt.
[Middle English aspalt, from Medieval Latin asphaltus, from Greek asphaltos.]
as·phaltic adj.