What Is a Slot?


A slot is a dynamic placeholder that either waits for content to call it (a passive slot) or actively calls out for content from a scenario. When the content is ready, a renderer will fill the slot with its content.

In computing, a slot or expansion slot is an engineered technique for adding capability to a computer in the form of connection pinholes, usually 64 closely-spaced holes, that can fit an expansion card with circuitry to add specialized functionality. The term is also used figuratively to refer to any slot in a sequence or series of events, such as an appointment or a job opening.

A slot machine is a type of gambling machine that accepts cash or paper tickets with barcodes as input. The machine is activated by a lever or button (either physical or on a touchscreen), which then spins the reels to arrange the symbols in combinations that earn credits according to the pay table displayed on the machine. Most slot games have a theme, and the symbols used in the game are aligned with that theme.

In American football, a slot receiver is a wide receiver who lines up closer to the quarterback and often runs precise routes. These receivers are a key part of most NFL offenses, and they must be well-conditioned and fast to beat cornerbacks who are tasked with covering them. The position has gained popularity as the league has moved toward a pass-heavy offensive philosophy.