en·gine (?n?j?n)n.1. 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.2. 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. Computers 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.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.engine (??nd??n) n1. (Mechanical Engineering) any machine designed to convert energy, esp heat energy, into mechanical work: a steam engine; a petrol engine. 2. (Railways) a. a railway locomotiveb. (as modifier): the engine cab. 3. (Military) military any of various pieces of equipment formerly used in warfare, such as a battering ram or gun4. obsolete any instrument or device: engines of torture. [C13: from Old French engin, from Latin ingenium nature, talent, ingenious contrivance, from in-2 + -genium, related to gignere to beget, produce]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014en?gine (??n d??n) n. 1. a machine for converting thermal energy into mechanical energy or power to produce force and motion. 2. a railroad locomotive. 3. fire engine. 4. any mechanical contrivance. 5. a machine or instrument used in warfare, as a battering ram, catapult, or piece of artillery. 6. Obs. an instrument of torture. [1250?1300; Middle English engin A machine is a piece of equipment which uses electricity or some other form of power to perform a particular task.When a machine operates by electricity, you refer to the part of the machine that converts power into movement as the motor.You do not use ‘machine’ to refer to the part of a vehicle that provides the power that makes the vehicle move. This part of a car, bus, lorry, or plane is usually called the engine.You talk about the engine of a ship, but the motor of a small boat.
-engined
-engined adj (in combination) equipped with an engine as specified: twin-engined; petrol-engined. Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014