noun
gasoline
GAS-uh-leen/ˈɡæsəliːn/
A liquid fuel used in many car engines and other internal combustion engines.
The person pumps gasoline into the car's fuel tank.

Etymology
Gas here referred loosely to fuel gases used for lighting and heating; ol probably represents “oil.” Together with a chemical substance ending, these pieces name the petroleum liquid now used as engine fuel.
In context
pure ethanol is really hard to start a car when it's cold, so the gasoline helps it start up and run better
More examples
- We stop for gasoline before driving into the mountains.
- She keeps spare gasoline in an approved fuel container.
- The generator burns gasoline to produce electricity.