A narrow notch, groove, or opening, as on the edge of a coin or letter, in a piece of machinery, or a slit in a door. Also: A position in a group, series, or sequence; a job assignment.

You’ve checked in, cleared security, made it to the gate, queued up to get on board, struggled with the overhead lockers and finally settled into your seat. Then the captain says: “We’re waiting for a slot.” What is a slot and why can’t you take off as soon as we’re ready?

In slots, the random number generator (RNG) produces a sequence of numbers. The computer then uses an internal sequence table to match those numbers with a location on the reels. Once the matching locations are found, the computer causes the reels to stop at those placements.

There are many different kinds of slot games, and the symbols used in each one vary according to its theme. A classic symbol is a stylized lucky seven, but some machines use fruits, bells, and other icons to represent their themes. Many slot games are themed after movies, TV shows, and other popular culture, and some even have bonus features related to their themes.

It’s important to understand the paytable of a slot machine before you play. This table will show you the prize values, winning combinations, and which bet sizes correspond to each prize. It’s also helpful to choose a machine with a low variance. This will increase your chances of winning, but you’ll likely win smaller amounts when you do.