An engine that obtains thrust by taking in air at the front, using it to burn fuel, then ejecting the hot combustion products at the rear through a propulsive nozzle.

(astronautics) a type of spacecraft propulsion, whereby electric fields accelerate ions out the exhaust to provide motive force

(firefighting) A vehicle used by firefighters to pump water to fight a fire. Typically, a fire engine carries a supply of water and has the ability to connect to an external water supply.

A piston engine.

plural of ion engine

The total volume of air/fuel mixture an engine can draw in during one complete engine cycle.

(uncountable) The technical discipline of recording and producing sound. / (less frequently) Engineering which is sound in the sense of being reliable.

To derive or duplicate the design, technical specifications, manufacturing methods, or functionality of an object by studying an existing product, prototype, etc.

A person who reverse-engineers products.

(historical) A large weapon of war used, during medieval times, to batter fortifications.