| English noun: engine | 
| 1. | engine (artifact) motor that converts thermal energy to mechanical work | 
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 | Broader (hypernym) | motor | 
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 | Narrower (hyponym) | aircraft engine, automobile engine, auxiliary engine, donkey engine, generator, heat engine, reaction engine, reaction-propulsion engine | 
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 | Part holonym | camshaft, gear, gearing, geartrain, power train, train | 
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| 2. | engine (phenomenon) something used to achieve a purpose | 
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 | Samples | An engine of change. 
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 | Broader (hypernym) | causal agency, causal agent, cause | 
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| 3. | engine (artifact) a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks | 
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 | Synonyms | locomotive, locomotive engine, railway locomotive | 
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 | Broader (hypernym) | self-propelled vehicle | 
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 | Narrower (hyponym) | choo-choo, diesel locomotive, dinkey, dinky, donkey engine, electric locomotive, iron horse, pilot engine, shunter, steam locomotive, switch engine, tank engine, tank locomotive, traction engine | 
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 | Part holonym | buffer, cowcatcher, fender, footplate, pilot | 
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 | Member meronym | railroad train, train | 
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| 4. | engine (artifact) an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc. | 
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 | Samples | Medieval engines of war. 
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 | Broader (hypernym) | instrument | 
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 | Narrower (hyponym) | arbalest, arbalist, ballista, battering ram, bricole, catapult, mangonel, onager, trebuchet, trebucket | 
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