A narrow opening, a groove or a notch, such as a keyway in machinery or the slit for coins in a slot machine. A position in a sequence, group, or series; also: the job of chief copy editor at the Gazette. (journalism) The inner part of a semicircular copy desk, occupied by the supervisor of the copy editors. (slang, Australia) To put something into a place where it belongs. (Australian Rules football, rugby union) The position on the team that is between the wide receiver and the tight end, and that is often occupied by a quick player.

A digital device that accepts coins or paper tickets with barcodes. These devices are referred to as slots in the United States and are similar to vending machines in other countries.

In electromechanical slot machines, the slots were actuated by tilt switches. These would break or make a circuit depending on whether the machine was being tilted or otherwise tampered with, and could trigger an alarm. Modern slot machines are programmed to have different probability weightings for each symbol on each reel. This means that a particular symbol might appear more frequently on the payline than it actually appears on the physical reel, although the appearance of a winning combination will still be random.

When choosing a slot game, it is important to consider the number of paylines it has and whether or not you can choose which ones to enable. You should also check the maximum cashout amount of a slot before you begin playing.