A slot machine is a slot machine that has reels and a paytable. When symbols line up in a particular order, the credits you receive will be listed on the paytable. Some symbols represent multiple others, and there is no set pattern to these combinations, making them hard to predict. The pay table is typically located on the machine face, either above or below the spinning wheels. The pay table can also be found in the help menu of video slot machines.
As the popularity of slot machines increased in the 1990s, multi-line versions became popular. These machines have more than one payline, and visible symbols may make up winning combinations even if they are not aligned on the main horizontal. Traditional three-reel machines generally have one, three, or five paylines, but video slot machines have nine, fifteen, or even as many as 1024. Multi-line machines generally accept variable credits, ranging from one to fifteen credits. The higher the number of credits you wager, the higher the payout.
The American Heritage Dictionary defines a slot as “a narrow opening, depression, notch, or slit”. A copy desk with a slot is a perfect example of a slot. The chief copy editor occupies the slot. In bird flight, a slot is the opening between the tips of the primaries. This helps smooth air flow over the wings. The slot on an airplane wing is a good example of an application of slots.