A narrow notch, groove, or opening, as in a keyway in machinery or the slit for a coin in a vending machine.
The slot (also called the hopper) on a casino slot machine is used to hold coins, tokens, or paper tickets. Each slot has a corresponding button on the machine’s control panel, which is pressed to stop the spin reels and to initiate payouts. A slot may also have a window or other means to show the player how much is in the machine.
Some people choose a slot machine based on its appearance, but this isn’t always the best way to pick a winning machine. Instead, pick machines based on what you enjoy. If you like simpler machines with a single pay line, try one of those; or if you prefer games that have a lot of bonus features, play them. The odds of the different types aren’t going to be significantly better or worse, but playing a game you enjoy increases your chances of success.