noun a weight, power, or agency, acting against or balancing another.
2. counterbalance ·noun a counterpoise to balance the weight of anything, as of a drawbridge or a scale beam.
3. counterbalance ·noun 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.
4. counterbalance ·vt to oppose with an equal weight or power; to counteract the power or effect of; to countervail; to equiponderate; to balance.