1. Motor that converts thermal energy to mechanical work 
2. Something used to achieve a purpose
   "an engine of change" 
3. A wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
   - locomotive, locomotive engine, railway locomotive [Brit, Cdn], loco, railroad locomotive [N. Amer] 
4. An instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.
   "medieval engines of war"

Derived forms: engines

See also: engineer

Type of: causal agency, causal agent, cause, instrument, motor, self-propelled vehicle

Part of: railroad train [N. Amer], railway train [Brit, Cdn], train

Encyclopedia: Engine

• messiah
• messiahship
• messianic
• Messidor
• messily
• Messina
• messiness
• messmate
• messuage
• messy
• mestiza
• mestizo
• mestranol
• Mesua
• Mesua ferrea
• meta-
• metabola
• metabolic
• metabolic acidosis
• metabolic alkalosis
• metabolic disorder
• metabolic process
• metabolic rate
• metabolically
• metabolise