A slot is a thin opening in something, such as the one you put letters and postcards through at the post office. It is also a term that can be used to describe the chance of winning a jackpot in a casino game. The chance of a win varies from game to game, and it can be more or less frequent depending on the variance of the game.
A pay table is a small table that shows what you can win for landing matching symbols on a specific line in the slot you are playing. These are often shown in a colourful table format to make them easy to read. They will typically include a picture of each symbol and how much you can win for landing (typically) 3, 4 or 5 of these in a row across a payline. They can also show a list of bonus features and the rules of each.
The number of paylines in a slot machine is another important factor to consider. Many online slot machines come with several different paylines, giving players more chances to form a winning combination with each spin. It is recommended to check the paytable of any slot you play before you start spinning the reels, so that you know what to expect from your spins.
In the context of airport coordination, a slot is an authorization to take-off or land at an airport on a given day and time during a specified period of time. The use of slots is a key tool in the management of air traffic at extremely busy airports and is designed to prevent repeated delays caused by too many flights trying to take off or land at the same time.