A slot is a dynamic placeholder that either waits for content to be delivered (passive slot) or can be triggered to call out for content using an Add Items to Slot action or a targeter. Slots work in conjunction with renderers to deliver content to a web page.

Definition: 1. An opening or gap into which something can be fitted, as in a door, window, or locker. 2. A position in a series, sequence, or schedule, as of a train timetable or meeting agenda. 3. A position in an organization or hierarchy. 4. An operative or other person assigned to a particular task or duty. 5. A compartment in an airplane, car, or ship.

When slots are available, they are allocated to airlines based on the number of seats they request, with preference given to new entrants or those who offer unserved routes. Slots are not guaranteed to be filled, though, and it is possible for slots to remain empty even when the airline has been allocated one.

When playing a slot machine, it is important to read the pay table, which displays the regular paying symbols and their payout values. It will also display how many paylines the game has and what the minimum and maximum bet amounts are. The pay table may also include information on any bonus features that the slot offers. Psychologists have found that people who play video slot machines reach a debilitating level of involvement with gambling three times faster than those who play traditional casino games.