engine
//ˈɛndʒɪn//
Noun
engineSingular
enginesPlural
1
A machine with moving parts that converts energy into motion, especially one that powers a vehicle or other device.
The car's engine stopped working on the highway.
2
A railroad locomotive.
The engine pulled the train out of the station.
3
A person or thing that is the primary source of power, energy, or activity in a system or organization.
Small businesses are the engine of economic growth.
4
A software system designed to perform a specific function, especially a search engine or game engine.
This game was built using a popular 3D graphics engine.