any of several plants, as the castor-oil plant or sesame, the seeds of which yield an oil.
- Oil rig
noun 1. See rig1 (sense 6)
noun 1. a region in W Africa, comprising the vast Niger River delta: formerly a British protectorate; now a part of Nigeria. plural noun 1. the delta of the Niger River in S Nigeria
noun, Geology. 1. a sand or sandstone containing oil or tarry residue in the pore spaces. noun 1. a sandstone impregnated with hydrocarbons, esp such deposits in Alberta, Canada oil sand A stratum of sand or sandstone containing petroleum that can be extracted by way of wells. The term is also applied to limestone and […]
- Oil security
noun a plan to shield a country from the economic damage caused by sudden, sharp rises in oil prices caused by wars, terrorism, accidents, natural disasters, or political decisions, esp. by arranging to get oil from multiple countries Examples The Arctic National Wildlife Rescue will be crucial to U.S. oil security.