Definition of "fuel" in English

noun

1. Substance consumed to provide energy through combustion, or through chemical or nuclear reaction.

2. Substance that provides nourishment for a living organism; food.

3. (figuratively) Something that stimulates, encourages or maintains an action.

   • His books were fuel for the revolution.
   • Money is the fuel for economy.
   • That film was nightmare fuel!

verb

1. (transitive) To provide with fuel.

2. (transitive) To exacerbate, to cause to grow or become greater.