throttle throttle /ˈθrɑːtəl/

noun

1. () A valve that regulates the supply of fuel to the engine  ( throttle valve , accelerator , throttle )
   a valve that regulates the supply of fuel to the engine
    You need to adjust the throttle to increase your speed
   You need to adjust the throttle to increase your speed
   
   
2. A pedal that controls the throttle valve  ( accelerator pedal , gas pedal [ N. American] , gun , accelerator , gas [ N. American] , throttle )
   a pedal that controls the throttle valve
    He stepped on the gas
   he stepped on the gas
   
   

verb

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