What is the meaning of british term petrol?

The word "petrol" is used in the United Kingdom and some other countries to refer to gasoline, the flammable liquid used to power internal combustion engines. It is derived from the Greek word "petra", meaning "rock", as gasoline was originally obtained from petroleum, which is a naturally occurring, flammable liquid found in the Earth's crust. In the United States, the term "gasoline" is more commonly used.