A slot is a narrow notch, groove or opening, such as a keyway in a piece of machinery or a slit for a coin in a vending machine. A slot also refers to a position in a group, series, or sequence.

A device with rotating reels that pays out credits based on predetermined odds of winning, as set by the casino or game operator. Slots can be single or multiple paylines. Pay lines may be straight, zigzag or diagonal. Regardless of how many paylines a slot machine has, it is important to gamble responsibly and never bet more than you can afford to lose.

The number of times a player will spin the reels of a slot machine before reaching a bonus round or other type of feature that rewards the player with extra credits or other prizes. Bonus features vary depending on the theme of a slot, but can include hold and spin bonuses (where regular symbols get replaced with money or jackpot awards), wheel spin bonuses (where you win extra spins on a prize wheel) and more.

The practice of scheduling meetings or events according to specific time periods — for example, hourly or weekly slots — in order to establish deadlines and support consistency throughout a workflow. For example, health care providers may use this approach to schedule appointments with clients or organize consultations or evaluation reviews. Integrating slot-based methods can also increase productivity by eliminating the need to rework and replan projects if team members have to shift tasks or deadlines.