Casino is a gambling establishment where people wager money and play games of chance or skill. Thousands of casinos operate worldwide, from massive Las Vegas resorts to small card rooms in bars and restaurants. They earn billions in profits each year for the companies, investors, and Native American tribes that own them. They also contribute to the economy by generating tax revenues for local governments.

Casinos are generally staffed by workers known as dealers or croupiers. They are usually trained in a specific game, such as blackjack or poker, and they facilitate the game for players by dealing the cards or spinning the wheel. Casinos also offer a wide variety of other games, such as roulette and craps. Many of these games have mathematically determined odds that give the house an edge over the player. The house edge can vary from game to game, but is typically between 1 and 2 percent.

In addition to games, casinos also provide entertainment in the form of live music and shows. They also serve food and drinks, and many have gift shops and other amenities. Because of the large amount of currency handled within a casino, both patrons and employees may be tempted to cheat or steal, either in collusion with each other or independently. To combat these problems, casinos employ a variety of security measures. These include cameras located throughout the facility, and sophisticated surveillance systems that allow security personnel to monitor all activity in a casino at once.