- Present participle of tether.
- (Internet) The connection of a personal computer to a mobile phone so as to obtain wireless Internet access from the PC
(1) Attaching a device by wire to a data or power source.
(2) To extend Internet access on a cellphone or smartphone to a computer or tablet. It used to mean connecting devices only by cable; however, the term was broadened to include wireless such as Bluetooth and Wi-Fi. See cellular hotspot.