A slot is a narrow notch, groove or opening, such as a keyway in a piece of machinery or a slit for a coin in a vending machine. It also refers to a position in a group, series or sequence, such as a time slot on a calendar.

In a slot game, players insert cash or, in “ticket-in, ticket-out” machines, paper tickets with barcodes into a designated slot on the machine. Then they spin the reels and, if a winning combination is created, the player earns credits according to the pay table displayed on the machine. Symbols vary but often include classic objects like fruits, bells and stylized lucky sevens. Many slot games are themed and offer bonus features that are aligned with the theme.

A slot can also refer to a time period that a team or individual is assigned to work on a project. Using a slot-based system can help establish important deadlines and ensure that work is prioritized appropriately. For example, health care providers often use time slots to schedule appointments with patients. By scheduling appointments in advance, providers can better manage their workload and meet the needs of each patient.