engine Definition

engine
noun

1. A machine that is used to convert some form of energy into mechanical energy that can be used to perform useful work.

Thesaurus: motor, generator, turbine, transformer, dynamo, apparatus, mechanism, contraption.
2. A railway locomotive.

Thesaurus: locomotive, motor, steam engine.
3. formal
A device or instrument.
Example: an engine of destruction

Etymology: 13c: from French engin, from Latin ingenium device.