A space or position in a group, series, sequence or system. A position in the field or arena in a game of football, rugby or hockey, especially one that allows the player to be closer to the goal than would otherwise be possible. Also known as the blue line.

A slot is a container that either waits passively for content (a passive slot) or actively calls out to a scenario to get its contents (an active slot). Renderers specify the content to be presented in the slot.

Slots can be created with or without props. A common use case involves encapsulating both reusable logic and visual output, delegating part of the latter to a consumer component via scoped slots. This use case is similar to how FancyList> is compiled and used in manual render functions.

Modern slot machines have microprocessors inside that assign different probabilities to each symbol on each reel. This means that, to a human, it can appear that the machine has just come so close to getting that JACKPOT symbol on the third reel, when in reality the probability of hitting it was much lower than for the first two.

The slot> element, part of the Web Components technology suite, is a placeholder that you can fill with markup to create a DOM tree and present it in a browser window. It has a global attribute named slot that you can set to name the placeholder.