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en·gine  (njn)
a. A machine that converts energy into mechanical force or motion.
b. Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel.
a. A mechanical appliance, instrument, or tool: engines of war.
b. An agent, instrument, or means of accomplishment.
3. A locomotive.
4. A fire engine.
5. Computer Science A search engine.
tr.v. en·gined, en·gin·ing, en·gines
To equip with an engine or engines.

[Middle English engin, skill, machine, from Old French, innate ability, from Latin ingenium; see gen- in Indo-European roots.]

engine [ˈɛndʒɪn]
1. (Engineering / Mechanical Engineering) any machine designed to convert energy, esp heat energy, into mechanical work a steam engine a petrol engine
2. (Transport / Railways)
a.  a railway locomotive
b.  (as modifier) the engine cab
3. (Military) Military any of various pieces of equipment formerly used in warfare, such as a battering ram or gun
4. Obsolete any instrument or device engines of torture
[from Old French engin, from Latin ingenium nature, talent, ingenious contrivance, from in-2 + -genium, related to gignere to beget, produce]

engine  (njn)
A machine that turns energy into mechanical force or motion, especially one that gets its energy from a source of heat, such as the burning of a fuel. The efficiency of an engine is the ratio between the kinetic energy produced by the machine and the energy needed to produce it. See more at internal-combustion enginesteam engine, See also motor.

engine  /ndn/  n. 1 a machine that produces force and motion: The engine in my car drives the wheels to make it move. 2 a machine that pulls a train, a locomotive engine

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