1. a machine that converts energy into mechanical force or motion
2. a locomotive that pulls a train
3. something used to bring about a desired result
Usage: figurative

1. to equip with an engine

Examples

• The car’s engine needs repair.
• The steam engine pulled into the station.
• She started the engine and drove away.
• The jet engine roared to life.
• Education is the engine of social progress.
• The company engines all its vehicles with hybrid technology.
• The old train engine whistled as it approached.