Middleman (noun)

1. A person who acts as an intermediary in a transaction between two other parties, typically for a commission or fee.
2. A person or company that operates between two larger and more powerful companies, acting as a mediator or agent in transactions.

Origin:

Late 16th century: originally in the sense "intermediary, go-between", from the idea of being in the middle.

Examples:

1. The middleman was paid a commission for arranging the sale of the business.
2. The middleman bought the goods from the supplier and sold them to the retailer.
3. The middleman was an essential part of the distribution process.
4. He worked as a middleman between the manufacturer and the customer.
5. The middleman's role has become increasingly important in international trade.