- A two- or three-conductor plug whose diameter is usually 0.25 or 0.125 inches. It consists of a single rod which has two or three contacts, each separated by an insulator. Two-conductor plugs are used for mono signals, and three-conductor plugs for stereo. Widely utilized to connect audio components, such as headphones and microphones. A phone plug is plugged into a phone jack (1).
- synonymphone connector