1. A valve that regulates the supply of fuel to the engine
   "The mechanic adjusted the throttle valve to improve fuel efficiency";
   - accelerator, throttle valve
    
2. A pedal that regulates engine speed of a vehicle
   "he stepped on the throttle";
   - accelerator, accelerator pedal, gas pedal [N. Amer], gas [N. Amer]

1. Reduce the air supply
   "throttle a carburettor";
   - choke
    
2. Compress or constrict the throat or windpipe cutting off air for breathing, potentially causing death
   "The attacker tried to throttle his victim";
   - strangle, strangulate, choke
    
3. Place limits on (extent, amount or access)
   "their bandwidth was throttled at peak times";
   - restrict, trammel, limit, bound, confine
    
4. Restrict, constrain, or suppress the movement, growth, or activity of
   "Regulations throttled innovation";
   - hamper, cramp, strangle

Derived forms: throttling, throttles, throttled

Type of: act, compact, compress, constrict, contract, enrich, foot lever, foot pedal, kill, move, pedal, press, squeeze, treadle, valve

Part of: aeroplane [Brit], airplane [N. Amer], auto [informal], autocar [archaic], automobile [N. Amer], car, fuel system, motor [Brit, informal], motorcar, plane, wheel [informal], whip [US, informal]

Encyclopedia: Throttle