noun A valve that regulates the supply of fuel-air mixture to an internal combustion engine and thus controls its speed; a similar valve that controls the air supply to an engine.
noun The lever or pedal that controls this valve.
noun The windpipe or trachea.
verb To control or adjust the speed of (an engine).
verb To cut back on the speed of (an engine, person, organization, network connection, etc.).
verb To strangle or choke someone.
verb To have the throat obstructed so as to be in danger of suffocation; to choke; to suffocate.