Equalizer
Equalizer , noun
1.
One who, or that which, equalizes anything.
2.
same as Equalizing bar.
3.
A device, as a bar, for operating two brakes, esp. a pair of hub brakes for an automobile, with equal force.
4.
(Electricity) Any device for equalizing the pull of electromagnets; also, a conductor of low resistance joining the armature ends of the series field coils of dynamos connected in parallel.
5.
(Aeronautics) A sliding panel to preserve the lateral stability of an aeroplane.
6.
(Electronics) a device or circuit within a sound-reproducing system that reproduces the original frequency distribution of the sound before recording by compensating for inequalities in the frequency response of the system.
7.
a gun. [slang]