A slot is a narrow notch, groove or opening such as a keyway in a piece of machinery or a slit for coins in a vending machine. In computer software, slots can be used to represent positions on a screen or a data bus, allowing different parts of the program to communicate with each other.

When a player wins a line in a slot machine, the win amount is displayed above the slot. This may also include the winning symbols. Some slot machines display only the winning amount, while others show all the symbols that made up the winning line.

Some health care professionals use the slot-based method of scheduling to organize appointments and other interactions with clients. This method can help to ensure consistency and accountability, as well as encourage open communication between team members.

Airports use slots to manage air traffic flow, which can reduce delays and fuel burn. The term also refers to a time period when a specific airline can fly into a congested airport, such as Heathrow.

A slot can also refer to a place in a hockey rink. The area in front of the goaltender and between the face-off circles is referred to as the low slot, while the area above the circles is considered the high slot. In addition to these definitions, there are several other ways that the word slot is used in everyday speech and writing.