Middleman

Webster's Dictionary of the English Language

·noun A person of intermediate rank; a commoner.

II. Middleman ·noun The man who occupies a central position in a file of soldiers.

III. Middleman ·noun An agent between two parties; a broker; a go-between; any dealer between the producer and the consumer; in Ireland, one who takes land of the proprietors in large tracts, and then rents it out in small portions to the peasantry.