A slit or narrow opening; a slot in a door. A position in a group, sequence, or series. A gap in the wing of an airplane used for a control device, etc.

A position in a game of chance, or a machine for playing games of chance, in which winnings are determined by the number and arrangement of symbols on the reels, or by other mechanical means. The Liberty Bell machine had three reels, while modern online slots can have five or more. These reels spin when you push a lever or button, and the goal is to line up matching symbols along pay lines.

The slot concept is what makes your game unique, so it’s important to come up with one early on. Then, you can use it to guide the rest of your design and development process. You’ll want to include a story, characters, and visuals that match your slot’s theme.

In aviation, a “slot” is an authorization for a take-off or landing at an airport on a given day during a specified time period. The slot is part of the coordination process with other airports for air traffic management, and can be used to avoid conflicts. The system also saves on delays and fuel costs. The concept is being implemented in many parts of the world, and it’s already shown to be a major benefit for air travel efficiency. The number of slots at each airport will depend on local conditions, and may vary by country.