A slot is a narrow opening in a machine or container into which something may be inserted. A slot in a schedule or program is a time or place for an activity to occur. A car seat belt slots easily into the slot on a vehicle’s buckle. He dropped the coin into the slot and dialed.

A video slot machine is a gambling machine that accepts cash or, in some cases, paper tickets with barcodes. The machine displays several reels of symbols and pays out credits based on the combinations that appear on its payline. The number of possible combinations is determined by the number of symbols and their placement on each reel. Some machines have a fixed number of paying symbols, while others use a random number generator to determine winning combinations. In either case, the symbols are usually aligned with the theme of the game.

Psychologists Robert Breen and Marc Zimmerman have found that people who play slot machines reach a debilitating level of involvement with gambling three times faster than those who engage in other casino games. In the United States, slot machines account for about three-quarters of all casino gambling revenue.

The term slot is also used to refer to the position on an ice hockey rink that affords a good vantage point for an attacker. The area in front of the goaltender and between the face-off circles is called the low slot, while the space directly in front of the opponent’s goal is called the high slot.