Adaptor/əˈdæptər/ Definition 1 of 3Pro Tip 1/3International Travel Used for devices when travelling to countries with different electrical outlets. Don't forget your adaptor when you go abroad. Pro Tip 2/3Charging Gadgets Adaptors are often used to connect chargers to incompatible ports. I use a USB-C adaptor for my old micro-USB cable. Pro Tip 3/3Different Brands Useful when bridging accessories from one brand to another. This adaptor lets my Sony headphones connect to my iPhone.