Roaming meaning : To wander or travel freely and with no specific destination. To use a network or service from different locations or devices. To transmit (resources) between different locations or devices, to allow comparable usage from any of them. To range or wander over. An instance of wandering. The ability to use a cell phone outside of its original registering zone. The use of a network or service from different locations or devices. (operating system) Using the OS service of manipulating folders and documents from different PC devices by a registered user.