throttle in WordNet English dictionary

1. a valve that regulates the supply of fuel to the engine
   accelerator  throttle  throttle valve 
   
2. a pedal that controls the throttle valve
   "he stepped on the gas"
   accelerator  accelerator pedal  gas pedal  gas  throttle  gun 
   

1. place limits on (extent or access)
   "restrict the use of this parking lot"; "limit the time you can spend with your friends"
   restrict  restrain  trammel  limit  bound  confine  throttle 
   
2. reduce the air supply
   "choke a carburetor"
   choke  throttle 
   
3. kill by squeezing the throat of so as to cut off the air
   "he tried to strangle his opponent"; "A man in Boston has been strangling several dozen prostitutes"
   strangle  strangulate  throttle