slot

A small narrow aperture or groove, as in a door or window.

A position or place in a group, series, sequence, etc.
To put into a slot.
The first step to playing online slots is finding the right game. Then, check out the game’s rules and pay table. You should also note whether the game offers any special symbols that can trigger different features. Then, choose whether you want to play a fixed number of paylines or select the ’free spins’ option. Keep in mind that the higher the stakes, the better your chances of winning. However, it is important to remember that even if you win big, there are no guaranteed wins in online slots. Instead, you can expect a certain percentage back on your wager over time, measured as the return-to-player (RTP).