afterburner
/ˈæftərˌbɜrnər/
noun
- A device on a jet engine that injects extra fuel into the exhaust to produce a brief increase in thrust, often used for takeoff or supersonic flight.
- The loud roar of the afterburner could be heard across the airfield.
- Pilots use the afterburner only when extra power is needed.
- The fighter jet engaged its afterburner to accelerate quickly.