Broker

[IsobelHaups]

a businessman who buys or sells for another in exchange for a commission

[RobertaInvag]

An agent involved in the exchange of messages or transactions.

[Williebit]

To act as a broker; to mediate in a sale or transaction.

[Gembakrofe]

one who transacts business for another; an agent

[soniportgo]

a dealer in secondhand goods

[MonicaLebi]

a pimp or procurer

[sastergri]

Originally a broken tradesman, from the Anglo-Saxon broc, a
misfortune; but, in later times, a person who usually transacts the
business of negotiating between the merchants and ship-owners respecting
cargoes and clearances: he also effects insurances with the
underwriters; and while on the one hand he is looked to as to the
regularity of the contract, on the other he is expected to make a candid
disclosure of all the circumstances which may affect the risk.

[Mendocky]

From the Anglo-Saxon brucan, through the Old English brocour, to use for profit.

[ArthuraCig]

A mediator between a buyer and seller.

[Couch Potatoe]

brōk′ėr, n. one employed to buy and sell for others: a second-hand dealer: a pander: a commissioner.—v.i. Broke, to bargain, negotiate: (Shak.) to act as a pander or go-between:—pr.p. brōk′ing; pa.p. brōked.—ns. Brok′erage, Brok′age, the business of a broker: the commission charged by a broker: a commission charged for transacting business for others; Brok′ery, the business of a broker.—p.adj. Brok′ing, doing business as a broker: practised by brokers. [M. E. brocour—A.S. brucan; Ger. brauchen, to use, to profit.]