Equalizer /(?)/

E·qual·i·zer

Equalizer

n.
  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. 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. (Elec.)
  5. A sliding panel to preserve the lateral stability of an aëroplane. (Aëronautics)
  6. a device or circuit within a sound-reproducing system that reproduces the original frequency distribution of the sound before recording by compensating for inequialities in the frequency response of the system. (Electronics)
  7. a gun. [slang]