petroleum

Short definition from Wiktionary

Noun

1. 1
   A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface.

Proper noun

1. 1
   A place in the United States: An unincorporated community in Nottingham Township, Wells County, Indiana.
2. 2
   A place in the United States: An unincorporated community in Allen County, Kentucky.
3. 3
   A place in the United States: An unincorporated community in Ritchie County, West Virginia.