From Longman Dictionary of Contemporary Englishjet engineˌjet ˈengine noun [countable] TTAan engine that pushes out a stream of hot air and gases behind it, used in aircraft → rocket engine
Examples from the Corpus
jet engine• When a resultant is radial, the body can take off, like a rocket or a jet engine.• A jet engine can take up to six seconds to spool up.• In fact the improvement statistics in our jet engine shops were even more remarkable. 