Throttle (verb)

1. To compress the throat of; to choke or strangle.
2. To control the flow of a fluid or gas by constriction or obstruction.
3. To reduce the speed of an engine or vehicle by regulating the fuel or power supplied.

Origin:

From middle english throtelen, frequentative of throten (“to throttle, strangle”), from old norse þrosla (“to choke, strangle”).

Examples:

1. The killer used his bare hands to throttle his victim.
2. You need to throttle the hose to stop the water flow.
3. I had to throttle back the engine to avoid overheating.
4. The captain ordered the pilot to throttle down the engines.
5. The internet company throttled our download speed.