A slot is a narrow, elongated depression or groove, notch, slit, or aperture, especially one that receives and admits something, such as a coin or a letter. Also: a position or assignment (especially in a grammatical construction) into which one of a number of possible morphemes can fit. From Middle Low German esclot, from Old Norse slótr (“track”).
The amount of money you win on a machine depends on what symbols appear on the pay line and the number of coins or tokens that are deposited into it. Some machines offer multiple pay lines, each with different payout values. Each symbol has a specific probability of appearing, which is displayed on the machine’s pay table.
If a winning combination appears on the pay line, the machine will credit your account. The exact amount you win is determined by the odds of that combination, as dictated by the game’s RNG. Over the long run, high-RTP slots return more to players than low-RTP games, but in a given session, it’s impossible to predict whether you’ll win or lose.
The most important factor to consider when choosing a machine is its volatility. Most manufacturers rate their machines with a volatility rating, which dictates the frequency and size of payouts over time. To get an idea of a machine’s volatility, search the internet for articles that discuss it or ask a casino employee. They may not have the ratings for every machine, but they should be able to point you toward machines with lower volatility.