What is Stockbroker?

Legal Definition
A stockbroker is a regulated professional individual, usually associated with a brokerage firm or broker-dealer, who buys and sells stocks and other securities for both retail and institutional clients through a stock exchange or over the counter in return for a fee or commission. Stockbrokers are known by numerous professional designations, depending on the license they hold, the type of securities they sell, or the services they provide. In the United States, a stockbroker must pass both the Series 7 and either the Series 63 or the Series 66 exams in order to be properly licensed.
-- Wikipedia
Legal Definition
Certified licensed agent who can offer securities and investment advice. They may (1) give counsel of what to purchase, (2) give counsel to sell or hold, (3) carry out buy/sell orders and (4) charge a fee. Also known as registered representative.
Legal Definition
One who buys and sells stock as the agent of others. Banta v. Chicago, 172 111. 204, 50 N. E. 233, 40 L. R. A. 611; Little Rock v. Barton, 33 Ark. 486; Gast v. Buckley (Ky.) 64 S. W. 632.
-- Black's Law Dictionary
Legal Definition
the title that is given to a person who buys and sells stocks for his clients.