A narrow depression, groove, notch, or slit, especially one for receiving or admitting something, such as a coin in a slot machine. A position in a group, series, or sequence; a period of time.

A slot is a place in a computer system where a program can run. A slot can also refer to a specific position in a computer, such as the hard disk drive where programs and data are stored.

The term slot is also used to refer to an authorization for a planned aircraft operation, as part of air traffic coordination. Airlines are given slots to avoid the repeated delays that can occur when too many flights try to take off or land at the same time.

Modern video slots often have more paylines and reels than traditional machines, as well as a variety of bonus features to keep players engaged. These can include free spins, wild multipliers, and progressive jackpots. They also have cinematic gameplay and fun themes that draw inspiration from popular culture and video game design.

In linguistics, a slot (plural: slots) is a grammatical function in a construction into which any of a set of morphemes or morpheme sequences may fit; also, a position or period of time. From Middle English slot, from Old Norse esclot. Compare with sleuth.