The definition of asphalt is a black or brown, tar-like substance that is used to cover roadways and is usually mixed with gravel.(noun)
Blacktop on your driveway is an example of asphalt.
See asphalt in Webster's New World College Dictionary
Origin: ML asphaltus < Gr asphaltos, prob. < a-, not + sphallein, to cause to fall, injure (< IE base *(s)p(h)el-, to split off > spill): ? so named because of use as protective substance for walls
See asphalt in American Heritage Dictionary 4
Origin: Middle English aspalt
Origin: , from Medieval Latin asphaltus
Origin: , from Greek asphaltos.
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