Plain English Meaning
A system that points the engine's blast forward for a few seconds after landing, so the engine helps slow the airplane down instead of pushing it forward.
Full Definition
Devices on a turbine engine that temporarily redirect the engine's exhaust or fan airflow forward, producing a rearward-acting force that helps decelerate the airplane after touchdown. They supplement wheel braking and aerodynamic drag during the landing roll and, on some aircraft, during a rejected takeoff.
Context Anchor
Encountered in turbine airplane landing procedures, rejected takeoff , and discussions.