noun
mediator; go-between; middleman; broker
A person or entity that acts as an intermediary between two or more parties, often in business, negotiations, or personal introductions.
彼は両社の仲介役として契約をまとめた。
He acted as a mediator between the two companies and finalized the contract.
不動産の仲介役を通して部屋を借りた。
I rented a room through a real estate broker.