(1):
(n.) A device, as a bar, for operating two brakes, esp. a pair of hub brakes for an automobile, with equal force.
(2):
(n.) One who, or that which, equalizes anything.
(3):
(n.) 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.
(4):
(n.) = Equalizing bar.
(5):
(n.) A sliding panel to preserve the lateral stability of an aeroplane.