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.	(Elec.) 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.	(Aëronautics) A sliding panel to preserve the lateral stability of an aëroplane.
	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 inequialities in the frequency response of the system.
	7.	a gun.

Noun	1.	equalizer - electronic equipment that reduces frequency distortion Synonyms: equaliser
	2.	equalizer - an equivalent counterbalancing weight Synonyms: counterbalance, counterpoise, counterweight, equaliser, balance
	3.	equalizer - a score that makes the match even

KO, clincher, crusher, death stroke, deathblow, end-all, ender, final stroke, finisher, finishing stroke, kayo, kayo punch, knockout, knockout blow, last dab, quietus, settler, sockdolager, stopper