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

Type of: fossil fuel, oil

• swamp candles
• swamp chestnut oak
• swamp cottonwood
• swamp cypress
• swamp dewberry
• swamp fever
• swamp fly honeysuckle
• swamp gum
• swamp hare
• swamp hickory
• swamp honeysuckle
• swamp horsetail
• swamp laurel
• swamp lily
• swamp locust
• swamp mallow
• swamp maple
• swamp milkweed
• swamp oak
• swamp pine
• swamp plant
• swamp poplar
• swamp rabbit
• swamp red oak
• swamp rose mallow