A casino is a special establishment where people can engage in gambling entertainment and spend time with friends or family members. It is also a popular tourist destination and attracts millions of visitors from all over the world. Casinos can be land-based or online and offer a wide range of different types of games.

The term is derived from the Latin word casa, meaning “house”; however, it may be also referred to as a gaming house or gambling establishment. Casinos are often combined with hotels, resorts, restaurants, shopping centers, and other tourist attractions. In the United States, they are usually located in or near urban areas and serve as a major source of revenue for the local economy.

Casinos have a very large profit margin, thanks to the fact that every game offers the casino a built-in advantage that is usually lower than two percent. This is enough to make a significant profit over the millions of bets placed by patrons. This is known as the house edge and it is what makes casinos such a profitable enterprise.

Because of the large amounts of money handled, casinos are prone to cheating and theft by both patrons and staff, in collusion or independently. This is why casinos invest heavily in security measures. Video cameras are everywhere, and roulette wheels and dice are electronically monitored regularly to discover any statistical deviations from expected results. Other sophisticated methods include the use of microcircuitry in betting chips to monitor the exact amount wagered minute by minute; and wholly automated casinos, where players bet by pushing buttons.