Sentence:  European oil firms are beginning to follow the example of their American counterparts by adding convenience stores to their pumps: the typical American <WSD>petrol</WSD> station now makes some 40 percent of its profits from the sale of non-oil products, such as cigarettes and beer. 
Meaning of the word marked with <WSD> tags:  Petroleum, a fluid consisting of a mixture of refined petroleum hydrocarbons, primarily consisting of octane, commonly used as a motor fuel.