1. A dark oil consisting mainly of hydrocarbons
   - petroleum, crude oil, crude, rock oil, oil, black gold

Type of: fossil fuel, oil

• deformational
• deformed
• deformity
• defragment
• defragmentation
• defraud
• defrauder
• defray
• defrayal
• defrayment
• defrock
• defrost
• defroster
• deft
• deftly
• deftness
• defunct
• defunctness
• defuse
• defusing
• defy
• degas
• degauss
• degaussing
• degeneracy