1. (

• accelerator ,
• throttle ,
• throttle_valve

) a valve that regulates the supply of fuel to the engine ;

2. (

• accelerator ,
• accelerator_pedal ,
• gas_pedal ,
• gas ,
• throttle ,
• gun ,

) a pedal that controls the throttle valve; "he stepped on the gas" ;

1. (

• restrict ,
• trammel ,
• limit ,
• bound ,
• confine ,
• throttle ,

) place limits on (extent or amount or access); "restrict the use of this parking lot"; "limit the time you can spend with your friends" ;

2. (

• strangle ,
• strangulate ,
• throttle

) kill by squeezing the throat of so as to cut off the air; "he tried to strangulate his opponent"; "A man in Boston has been strangling several dozen prostitutes" ;

3. (

• choke ,
• throttle

) reduce the air supply; "choke a carburetor" ;