A universal plug is often referred to as a “world plug.” This is a type of plug that is designed to fit into different types of sockets around the world. With a world plug, you can connect your electronic devices to various types of sockets without needing a specific adapter for each country.

A world plug typically has multiple interchangeable pins or a slide mechanism that allows you to select the right configuration for the specific country. This enables you to adapt the plug to the sockets in different countries with various plug types and voltages.

It is useful to bring a universal plug when traveling, as it allows you to safely connect your electronic devices in different countries without worrying about compatibility with local sockets.