A casino is an establishment for certain types of gambling. Often, casinos are combined with hotels, resorts, restaurants, retail shops, and other entertainment attractions. Casinos are regulated by governments and are a major source of revenue for many countries. They may also serve as a venue for events such as concerts and stand-up comedy. The term casino may also be used to refer to a specific game, such as blackjack.
In modern casinos, security starts on the casino floor, where employees keep their eyes on patrons and games to make sure everything is playing out as it should. Observant workers can spot blatant cheating or stealing by checking for dice that are too hot, cards that are marked, or players who have betting patterns that might signal collusion. Higher-ups have a more global view, tracking tables and individual players as they play and noting statistical deviations that could be indicators of fraud. While there will always be crooks who try to take advantage of the unwary, the vast majority of casinos are heavily regulated and have plenty of security.