society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > jet > parts of (3)
a pipe or duct from which a jet of fluid is expelled; (in later use) spec. the exhaust duct of a jet engine.
A jet of fluid; spec. one used for jet propulsion.
An auxiliary burner in the exhaust section of a jet engine to provide a temporary increase in thrust. Also figurative.