A slot is a narrow depression, groove, notch, or slit, especially one for receiving or admitting something, such as a coin or letter. It can also refer to a position within a construction into which any of a set of morphemes or morpheme sequences can fit; compare filler (def 4).

A mechanical game that accepts cash or paper tickets with barcodes that contain a monetary value, then spins and rearranges symbols to form combinations of winning credits. Modern video slots have a wide variety of themes, and may be operated with a lever or buttons as part of skeuomorphic design elements or by using touchscreens. They typically use a random number generator to determine the results of a spin.

A pay table displays the symbols that can be matched to receive credits in a machine and shows how much the player must wager to earn the highest payout. The table is usually affixed to the machine or, in “ticket-in, ticket-out” machines, on its face. It may also be displayed in a separate help menu. In addition, some video games allow players to improve their chances at winning by making higher wagers.