Generator (noun)

1. A machine that generates power, usually in the form of electricity.
2. A person or thing that generates something.

Origin:

Late middle english: from latin generator "creator, begetter", from the verb generare, from genus, gener- "race, kind".

Examples:

1. He used a generator to power the tools at the construction site.
2. The generator provided electricity to the whole building during the power cut.
3. The generator is powered by a gasoline engine.
4. The wind turbine is a generator of renewable energy.
5. He was a generator of new ideas and was always coming up with new projects.