A slot is a container that holds dynamic items on a Web page. A slot either waits passively for content to be added (a passive slot) or uses a trigger or renderer to fill the content. A slot can also be used to hold a static item such as an image or text.

Slot is a feature of the PostgreSQL database that allows users to manage multiple replication streams. Each slot has an identifier that is unique across all databases using it. The identifier is stored in the metadata for the slot, so that it can be used to identify and recover data. This feature allows for a high degree of availability. A slot can be configured to automatically fail over if the connection that is attempting to use it fails.

In gambling, a slot is a position on a game’s reels that has the highest probability of hitting the jackpot. The term can also refer to the amount of money that a player has available for betting. There are many different types of slots, and each has a different payout structure. Some machines may even offer bonus features that can be triggered with certain combinations of symbols.

When playing a slot machine, players place cash or, in the case of ticket-in, ticket-out machines, paper tickets with barcodes, into a slot on the machine. Then, a lever or button (either physical or on a touchscreen) is activated to spin the reels and determine the winning combination of symbols. If the symbols match a pay table, the machine awards credits based on that table.

Many people believe that progressive jackpots on slots are more likely to hit at night because of the higher number of players playing. While this might be true, it is important to understand that every spin of a slot machine has the same chance of winning. It is also important to read the rules of each machine before playing.

A slot is a narrow opening into which something can fit, such as a hole or window. The word is often used in reference to a position or time period, such as the slot on the broadcasting schedule. It can also be a position or job, such as the slot held by the chief copy editor at the newspaper. In linguistics, the term is sometimes used to refer to a particular function within a construction into which any one of a set of morphemes or morpheme sequences can fit. Similar to rim (def 5) and gap (def 6). See also notch, slit, aperture, vent, pocket, niche, window, vacancy, and berth.