- noun the time for which employees are paid although they are unable to work because of factors beyond their control
- noun a period of time when a device is switched on but not doing anything
- A time interval during which either the worker, the equipment, or both do not perform useful work.
- A time interval during which a device, piece of equipment, or system is operational and available, but is not in use.
- noun the time when a machine is not being used