a slot

A slot is a location in the data of a block entity or entity that an item stack can be placed in. A slot is defined by its slot index. In commands, a slot should be referred by a string id instead of its index. The string id is mapped to its index when executing command. A string id of slot consists of slot type and optional slot number, in the format of or .. In commands, a slot is referred by two arguments: slot type and slot number. For a block, its...

A RAM slot, also referred to as a RAM socket, is a long, slim slot on a PC's motherboard where the RAM is installed.

A gum ball machine has a slot for inserting a coin, and some front doors have a special slot for mail carriers to put mail in. A screwdriver fits neatly into the slot on top of a screw.