Simple Definition of engine
: 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
Full Definition of engine
2 a : something used to effect a purpose : agent, instrument <mournful and terrible engine of horror and of crime — E. A. Poe> b : something that produces a particular and usually desirable result <engines of economic growth>
3 a : a mechanical tool: as (1) : an instrument or machine of war (2) obsolete : a torture implement b : machinery c : any of various mechanical appliances —often used in combination <fire engine>
4 : a machine for converting any of various forms of energy into mechanical force and motion; also : a mechanism or object that serves as an energy source <black holes may be the engines for quasars>
5 : a railroad locomotive
6 : computer software that performs a fundamental function especially of a larger program
Examples of engine
The car has a four-cylinder engine.
tanks, planes, and other engines of war
The tax cut could be an engine of economic growth.
Origin of engine
Middle English engin, from Anglo-French, from Latin ingenium natural disposition, talent, from in- + gignere to beget — more at kin
First Known Use: 13th century
Definition of engine
: to equip with engines
First Known Use of engine
Seen and Heard
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