counterpoise

Etymology

From Old French contrepois, contrepeser, later assimilated to poise.

noun

1. A weight sufficient to balance another, for example in the opposite end of scales; an equal weight.
2. An effect of equal power or force acting in opposition; a force sufficient to balance another force or influence
3. The relation of two weights or forces which balance each other; equilibrium

verb

1. To act against with equal weight; to equal in weight; to balance the weight of; to counterbalance.
   Weights, counterpoising one another.
2. To act against with equal power; to balance.