Definition of "engine" []

• A machine that converts energy into mechanical force or motion. (noun)
• Such a machine distinguished from an electric, spring-driven, or hydraulic motor by its use of a fuel. (noun)
• A mechanical appliance, instrument, or tool: engines of war. (noun)
• An agent, instrument, or means of accomplishment. (noun)
• A locomotive. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "An engine working on this principle has therefore been called a _high-pressure engine_."
• "One of the most important changes in our engine revision strategy is moving to the Cloudmark antispam engine*, which provides 99%+ detection rate and less than 1 in 250,000 false positives (West Coast Labs)."
• "Miraculously, the TAG engine kept running as he accelerated on to the finish straight to win the championship, the first time a driver had done so in successive years since Jack Brabham in 1959/60."