|1.||any machine designed to convert energy, esp heat energy, into mechanical work: a steam engine; a petrol engine|
|2.||a. a railway locomotive|
|b. (as modifier): the engine cab|
|3.||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|
|[C13: from Old French engin, from Latin ingenium nature, talent, ingenious contrivance, from |
engine [%PREMIUM_LINK%] (ěn'jĭn) Pronunciation Key |
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 engine, steam engine., See also motor.