A slot is a slit or narrow opening. In computing, a slot is an empty place in a container for data or code. A slot can be used as a label or an indicator, and it can have any shape. The slot element in Web applications is similar to a div tag but allows for nested containers and is part of the Shadow DOM.

Slots are a popular casino game that use reels with symbols to determine the winning combination. A player inserts cash or, in “ticket-in, ticket-out” machines, a paper ticket with a barcode into the machine and activates it by pressing a button (either physical or on a touchscreen). The reels spin and when they stop, winning combinations pay out credits according to the paytable. The theme of a slot game is often reflected in its symbols, which can range from traditional fruit or bells to stylized lucky sevens.

Historically, slot machines have been programmed to payout between 83% and 99% of coins placed in them. However, a win is not guaranteed; it is dependent on the luck of the player and the specific programming of the machine. Some machines are programmed to pay out more frequently than others and to be located near the entrance of the casino in order to attract passersby.

In hockey, a high or low slot refers to the area of the ice where the puck is most likely to be shot by the offense. This area is referred to as the “no man’s land” because of the difficulty that defenders have in trying to stop players from shooting into the goal.