Any fuel derived from hydrocarbon deposits such as coal, petroleum, natural gas and, to some extent, peat; these fuels are non-renewable, and their burning moves carbon from underground into the atmosphere via the greenhouse gas carbon dioxide.
petroleum-based liquid used as fuel or lubricant.
petroleum
Liquid fat.
An oil painting.
Oil paint.
Containing oil, conveying oil; intended for or capable of containing oil.
To lubricate with oil.
To grease with oil for cooking.