Broker/ˈbrəʊkər/ Definition 1 of 3Pro Tip 1/3Professional Context Often used in business and finance to describe specialists in these fields. She hired a broker to manage her investment portfolio. Pro Tip 2/3Role Clarity A broker acts on behalf of others, not trading for their own benefit. The real estate broker helped them find the perfect house. Pro Tip 3/3Service Charge Brokers typically earn through commissions or fees for services. Ask about the broker's fees before you agree to work with them.