Bitumen

1.

(any of various natural substances, etc., consisting mainly of hydrocarbons) ឈ្មោះប្រេងម៉្យាងឬកៅស៊ូក្រាលថ្នល់

1.

Mineral pitch; a black, tarry substance, burning with a bright flame; Jew's pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian Seas. It is used in cements, in the construction of pavements, etc.

2.

By extension, any one of the natural hydrocarbons, including the hard, solid, brittle varieties called asphalt, the semisolid maltha and mineral tars, the oily petroleums, and even the light, volatile naphthas.