A slot is a passageway or opening into which a piece can be fitted. In a typewriter, the journal of the axle A, which carries the typebars, is free to move vertically in a wide vertical slot G, formed in the frame. The only connexion between the screwhead S and the typewheel is by a pin p, the cylindrical end of which acts in a slot cut in the screwhead.
In a slot machine, the player inserts cash or, in “ticket-in, ticket-out” machines, a paper ticket with a barcode into a designated slot and activates it by pressing a lever or button (physical or virtual). The reels then spin and stop to rearrange symbols. When a winning combination is produced, the player receives credits according to the pay table. Symbols vary between machines, but classic symbols include fruits, bells, and stylized lucky sevens. Most slot games have a theme, with bonuses and other features aligned with that theme.
Penny slots are designed to be extra appealing, with flashing lights and a profusion of noises (including jangling, clanging, and buzzing) drawing players in like bees to honey. But before you get drawn in, set a budget for yourself and stick to it.
An airport slot gives an airline the right to operate at a particular time or place, typically when air traffic is constrained. This can lead to major savings in delays and fuel burn. It is also used for a range of other operational purposes, such as managing the flow of passengers into and out of terminals.