throttle - noun

a valve that regulates the supply of fuel to the engine

a pedal that controls the throttle valve

throttle - verb

• place limits on (extent or access)
• kill by squeezing the throat of so as to cut off the air
• reduce the air supply

throttle - thesaurus

accelerator   bound   choke   confine   gas   gun   limit   restrain   restrict   strangle   strangulate   trammel