- noun a space between two things
- noun a narrow gap between a recording or playback head and the magnetic medium
- A narrow space of air separating components, circuits, or devices.
- A space of a nonmagnetic material, such as air, between magnetic components, circuits, devices, or materials. For instance, the opening between pole pieces in a tape head. Also called magnetic gap, magnetic air-gap, or gap (3).
- A spark gap in which two electrodes are separated by air.