A narrow notch or similar opening, such as one in a door. Also: a track or trail, especially that of a deer or other animal; a spoor. (Ornithology) A notch between the primaries of certain birds, which during flight helps to maintain a flow of air over the wings.
In a slot machine, the house advantage is not linear—it can vary from game to game. This is due to the fact that every time a spin is activated, a random number is generated. Whether that number matches a payline determines the outcome of the play. A loose machine pays out more often than a tight one. Likewise, a machine that has high variance (meaning the payouts can be either low or high) will have higher average loss per session than a machine with lower volatility (meaning the payouts are more consistent).
Online slots offer players a comfortable and convenient alternative to traditional brick and mortar casinos. However, before you start playing you should understand the pros and cons of this form of digital entertainment.