Reverser may refer to:
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Thrust reverser
Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's thrust for it to act against the forward travel of the aircraft, providing deceleration. Thrust reverser systems are featured on many jet aircraft to ...
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Reversing gear
Reversing gear is a mechanism used to both control the direction of travel of a steam locomotive and adjust its engine's steam cutoff.
Reversing lever
The most common form of reversing gear uses a lever to engage (known as a ''Johnson bar'' in ...
, often called a reverser, controls the valves on a steam engine
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Reverser handle, an operating lever for a locomotive
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