a weight that balances another weight
"The gymnast adjusted her shoulder equalizer to ensure both sides of her beam routine remained perfectly balanced."
a score that makes the match even
"After losing two games to zero, the team fought back hard to secure an equalizer and force overtime."
One who makes equal; a balancer.
"The seasoned mediator acted as an equalizer between the two warring factions, ensuring neither side gained an unfair advantage in negotiations."