gas engine1
/ˈɡas ɛn(d)ʒ(ɪ)n/noun
An engine driven by the production, expansion, or combustion of gas; (later especially) an internal-combustion engine which uses gas as fuel.
Origin
Early 19th century; earliest use found in The London Magazine. From gas + engine.
gas engine2
/ˈɡas ˌɛn(d)ʒ(ɪ)n/Chiefly US
noun
An internal-combustion engine which uses petrol as fuel.
Origin
Early 20th century; earliest use found in Rock Valley (Iowa) Bee. From gas + engine.