A slot is a narrow opening or groove that runs through a piece of wood or metal. A slot is also a position in an organization or system that is reserved for someone. For example, an employee can have a slot for writing or an event can be scheduled in a slot.

In a slot machine, players insert cash or, in “ticket-in, ticket-out” machines, paper tickets with barcodes. Then they activate the machine by pressing a lever or button (either physical or on a touchscreen), which spins the reels and then stops them to rearrange symbols. When a winning combination appears, the player earns credits according to the paytable. Typical symbols include fruit, bells and stylized lucky sevens. Most slot games have a theme, and the symbols and bonus features are aligned with that theme.

A key requirement in slot machining is chip evacuation. To ensure that chips are removed continuously from the workpiece, it is recommended that slots be cut in at least two passes. This allows for adequate space for chip removal between each pass and provides a more consistent surface finish. The use of special tooling like cutters with chip breakers can help to facilitate rapid chip removal as well. In addition, coolant or lubricant flushing and compressed air can also be used to clear chips from the cutting zone during operation.