A Walkie-Talkie is a two-way RADIO device that allows users to communicate with each other over short distances. It is also known as a handheld transceiver, and it is typically used in situations where a telephone or other communication device is not available. The term 'Walkie-Talkie' is derived from the fact that it is a combination of a walkie (a portable RADIO) and a talkie (a device that allows two-way communication). The term 'RADIO' is often used interchangeably with Walkie-Talkie, as they both refer to the same type of device.