1. devices or valves used to stop the flow of water, gas, electricity, or other utilities
2. the act or instance of stopping or cutting off a supply or service

Examples

• The plumber located the water shutoffs in the basement.
• Make sure you know where the gas shutoffs are in case of emergency.
• The utility company installed new electrical shutoffs for each apartment.
• Power shutoffs affected thousands of customers during the storm.
• The building inspector checked all the main shutoffs.
• Emergency shutoffs are required by local building codes.
• Rolling shutoffs helped prevent overloading the power grid.