equalizer

 
Pronunciation: /ˈiːkwəlʌɪzə/
(also equaliser)

noun

  • 1a thing which has an equalizing effect: education is the great equalizer
  • British a goal that levels the score in the game: his second goal was the equalizer
  • 2North American informal a weapon, especially a gun.
  • 3 Electronics a passive network designed to modify a frequency response, especially to compensate for distortion.