A slot is a narrow opening, especially in a machine or container. It may also refer to a position, such as the one in a baseball batting order or the area between face-off circles on an ice hockey rink.

A casino slot is a type of gambling machine that pays out credits to players based on the symbols they line up. It is a common type of machine, and it can be found at most casinos. Psychologists have found that video slot machines can be addictive and lead to problem gambling, even if the player has engaged in other forms of gambling without any problems.

Modern slot machines have many different ways to pay out winning combinations, and these are often referred to as “symbols”. Each symbol has a unique number that corresponds to it in the slot’s pay table. This table displays pictures of the symbols and how much a player can win by lining them up on a payline. The pay table is usually displayed above or below the slot machine’s reels, or in a help menu on a video screen.

In computers, a slot is an engineered technique for adding capability to a computer. A slot contains a series of connection pinholes, typically in the form of 16 to 64 closely-spaced holes, into which an expansion card can be fitted. Modern computer motherboards have several slots, including ISA, PCI, AGP, and memory slots. A slot is also a concept in very long instruction word (VLIW) computer architecture, where the relationship between an operation and the pipeline to execute it is explicitly stated.