- An opening, pause, or interruption in continuity.
- In a circuit-opening device, such as a switch, the minimum distance between the contacts when in the open position.
- An interruption in processing, execution, transmission, communication, or the like. Also, a command which creates such a break. Also called pause (3).
- A key on a computer keyboard which creates a break (4). Also called pause (4).
- A signal sent by a receiver indicating the desire to transmit.
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