A slot is a period of time when an airplane can take off. Depending on the size of the aircraft, its type and where it is departing from, the slot can vary between two hours in advance to as late as 30 minutes. When airlines use central flow management, slots can be reduced to improve safety and reduce fuel burn, resulting in significant environmental benefits.

A symbol on top of a slot machine that flashes to notify the operator that change is needed, hand pay is requested or a potential problem with the machine is detected. On mechanical slot machines, this is usually a seven-segment display, while video slots typically use stylized text that suits the game’s theme and user interface.

In hockey, the low slot (also called the ice slot) is an area on the ice where players have a better chance of scoring a wrist shot without a deflection because it offers them a direct view of the net. This advantage makes the slot one of the most dangerous areas on the ice for defenders, especially when matched up against fast offensive players such as wingers and centers.

B.F. Skinner first posited the notion of conditional reinforcement as a possible explanation for near-miss effects in gambling, and many experimental studies have attempted to replicate this theory by manipulating frequency of wins and losses on a slot machine simulator. However, to date, none of these experiments have been able to demonstrate that near misses are a strong conditional reinforcer of gambling persistence.