1. A fraudulent brokerage firm that uses aggressive telephone sales tactics to sell securities that the brokerage owns and wants to get rid of. The securities they sell are typically poor investment opportunities, and almost always penny stocks.

2. A brokerage that makes trades on a client's behalf and promises a certain price. The brokerage, however, waits until a different price arises and then makes the trade, keeping the difference as profit.

1. Bucket shops are sometimes called the boiler room. The U.S. has laws restricting bucket shop practices by limiting the ability of brokerage houses to create and trade certain types of over-the-counter securities.

2. The second definition for a bucket shop comes from more than 50 years ago, when bucket shops would do trades all day long, throwing the tickets into a bucket. At the end of the day they would decide which accounts to award the winning and losing trades to.