A narrow depression, notch, slit, or aperture; especially, one for receiving something, as a coin or a letter. Also used figuratively, as in A time or position within a schedule or sequence: His TV show occupies the 8 p.m. slot on Thursdays.

In a game of chance, a slot is an opening in the machine that pays out a prize when certain combinations of symbols line up on a payline. The payout amount is determined by a computer program known as a random number generator (RNG). In mechanical slots, the spins take place across physical reels, which have tangible levers and spring mechanisms. Video slots are played on large screen displays that have high-definition visuals and unique sounds that add to the entertainment experience.

While it may seem like some slot machines are “hot” or “cold,” the truth is that they all have the same probability of winning. That’s because RNGs generate completely random numbers each millisecond, so the outcome of a spin depends on a million variables that are independent of each other. Therefore, every spin of a slot machine is independent of any previous or following spins.

A slot is an authorization to take off or land at a busy airport during a specified period of time. Air traffic controllers use slots to manage airport congestion and reduce delays caused by too many airplanes attempting to take off or land at the same time. Slots are usually reserved for larger commercial aircraft, although smaller passenger planes can sometimes be scheduled in a slot.