- an object or device that shuts (something) off: the automatic shutoff on a heater.
- an act or instance of shutting off something, as an opening, a flow, or a service: a shutoff of electric power due to unpaid bills.
- a device that shuts something off, esp a machine control
- a stoppage or cessation
- to stem the flow of
- to block off the passage through
- to isolate or separate
