Any of several internal combustion engines that have the cylinders arranged radially around a central crankshaft

plural of fire engine

A form of jet engine that possesses an inlet duct, such as a turbojet, ramjet, or turbofan. Rockets are not considered duct engines.

A steam locomotive that carries its fuel and water containers on the locomotive frames, as opposed to in a separate tender.

plural of tank engine

A rotary internal combustion engine, without pistons, using instead an epitrochoid-shaped housing.

Any engine used to propel an aircraft, including jet engines and rocket engines etc.

present participle of reverse-engineer

Third-person singular simple present indicative form of reverse-engineer

plural of reverse-engineer