1) French word used in English 2) Hydrocarbon 3) Kind of coal 
• (a.) Having the qualities of bitumen; compounded with bitumen; containing bitumen.
Impregnated with bitumen (ordinary household coal).
Consisting of hydrocarbons (such as coal) and materials formed from them.
That contains road tar, bitumen, pitch or mixtures thereof.
Bi·tu'mi·nous adjective [ Latin bituminosus : confer French bitumineux .] Having the qualities of bitumen; compounded with bitumen; containing bitumen. « Near that bituminous lake where Sodom flamed. Milton. » Bituminous coal , 
Containing or treated with bitumen. Examples: bituminous concrete, bituminous felts and fabrics, bituminous pavement.
[adj] - resembling or containing bitumen
adjective resembling or containing bitumen; `bituminous coal`
Resembling, containing or impregnated with bitumen.
resembling or containing bitumen: bituminous shale.