Balance

A state in which opposing forces harmonise; equilibrium.

Mental equilibrium; mental health; calmness, a state of remaining clear-headed and unperturbed.

Something of equal weight used to provide equilibrium; counterweight.

"Blair thought he could provide a useful balance to Bush's policies."

A pair of scales.

To bring (items) to an equipoise, as the scales of a balance by adjusting the weights.

To make (concepts) agree.

To hold (an object or objects) precariously; to support on a narrow base, so as to keep from falling.

"I balanced my mug of coffee on my knee."

To compare in relative force, importance, value, etc.; to estimate.