Definition of engine
- engines of economic growth
- fire engine
- black holes may be the engines for quasars
The car has a four-cylinder engine.
tanks, planes, and other engines of war
The tax cut could be an engine of economic growth.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'engine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a machine that changes energy (such as heat from burning fuel) into mechanical motion
: the vehicle that pulls a train
: something that is used for a particular purpose
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