throttle

[throt-l]
noun
1.
Also called throttle lever. a lever, pedal, handle, etc., for controlling or manipulating a throttle valve.
3.
the throat, gullet, or windpipe, as of a horse.
verb (used with object), throttled, throttling.
4.
to stop the breath of by compressing the throat; strangle.
5.
to choke or suffocate in any way.
6.
to compress by fastening something tightly around.
7.
to silence or check as if by choking: His message was throttled by censorship.
8.
Machinery.
a.
to obstruct or check the flow of (a fluid), as to control the speed of an engine.
b.
to reduce the pressure of (a fluid) by passing it from a smaller area to a larger one.
Idioms
9.
at full throttle, at maximum speed.

Origin:
1350–1400; (v.) Middle English throtelen, frequentative of throten to cut the throat of (someone), strangle, derivative of throat; (noun) probably diminutive of Middle English throte throat; compare German Drossel

throttler, noun
unthrottled, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
throttle (ˈθrɒtəl)
 
n
1.  Also called: throttle valve any device that controls the quantity of fuel or fuel and air mixture entering an engine
2.  an informal or dialect word for throat
 
vb
3.  to kill or injure by squeezing the throat
4.  to suppress: to throttle the press
5.  to control or restrict (a flow of fluid) by means of a throttle valve
 
[C14:throtelen, from throtethroat]
 
'throttler
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

throttle
"strangle to death," c.1400, probably from M.E. throte "throat" (see throat). The noun, in the mechanical sense, is first recorded 1870s, from throttle-valve (1824), but was used earlier as a synonym for "throat" (1547); it appears to be an independent formation, not derived from the verb.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Most laptop operating systems have default power settings that extend battery
  life by throttling back power consumption.
As a last resort, the system slows the car by throttling back or shifting gears.
Both escaped from their throttling families by striking rebellious poses that
  made them generation heroes.
Networks already employ throttling and congestion management in each cell in a
  network.
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