1. noun /ˈbaləns,ˈbæləns/
a) a state in which opposing forces harmonise; equilibrium
These weights are used as a balance for the overhanging verandah
b) mental equilibrium; mental health; calmness, a state of remaining clear-headed and unperturbed
Blair thought he could provide a useful balance to Bushs policies.
Syn: scales, weighing machine, weighbridge, equilibrium, disinterest, even-handedness, fairness, impartiality, neutrality, non-partisanship, account
Ant: non-equilibrium, imbalance, unbalance, bias, favor, favour, partiality, partisanship, prejudice, unfairness
2. verb /ˈbaləns,ˈbæləns/
a) to make (items) weigh up.
b) (figurative) to make (concepts) agree.
Wikipedia foundation.