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English definition of “engine”

engine

noun [C]     /ˈendʒɪn/
a machine that uses energy to produce movement: a jet engine a car/aircraft engine
something that makes something happen, or that influences it strongly: For much of the 19th century Britain was the workshop of the world and the engine of economic growth.
IT a computer program that performs a particular task: This is a new payment engine that can handle online payments securely. → See also search engine
(Definition of engine noun from the Cambridge Business English Dictionary © Cambridge University Press)
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