A slot is a container for dynamic items. It either waits for content to be added to it (a passive slot) or calls out for it (an active slot). Slots work in conjunction with renderers to display the contents of the rendered page. A slot of type Media-image can only contain images; a slot of type Solution is used for displaying a collection of solutions.
A thin opening in something, especially a mechanical part. For example, a mail slot is a slot through which letters and postcards can be dropped. In football, a slot receiver is a player who can stretch the defense vertically and catch a pass by running short routes on the route tree, such as slants or quick outs.
When a player inserts cash or, in ticket-in, ticket-out machines, a paper ticket with a barcode into a slot on the machine, the reels spin and stop to rearrange the symbols. If a winning combination is found, the player earns credits based on the payout table. Symbols vary according to the theme of the machine, but classic symbols include fruits, bells, and stylized lucky sevens. Some machines have multiple paylines; others offer a fixed amount per spin. In the latter, players can choose how many paylines they want to wager on or let the machine automatically select them. While a fixed number of paylines reduces the cost of each spin, it may limit the potential for a large win.