"throttles" in the noun sense
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"
"throttles" in the verb sense
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"
Source: WordNet® (An amazing lexical database of English)
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