Definition of counterbalance

• v. t. - To oppose with an equal weight or power; to counteract the power or effect of; to countervail; to equiponderate; to balance.
• n. - A weight, power, or agency, acting against or balancing another
• n. - A mass of metal in one side of a driving wheel or fly wheel, to balance the weight of a crank pin, etc., on the opposite side of the wheel
• n. - A counterpoise to balance the weight of anything, as of a drawbridge or a scale beam.