"rolling brownout" meaning in English

{
  "forms": [
    {
      "form": "rolling brownouts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rolling brownout (plural rolling brownouts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Electricity",
          "orig": "en:Electricity",
          "parents": [
            "Electromagnetism",
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A deliberate reduction in voltage."
      ],
      "id": "en-rolling_brownout-en-noun-uz4Z5TeA",
      "links": [
        [
          "electricity",
          "electricity"
        ],
        [
          "deliberate",
          "deliberate"
        ],
        [
          "reduction",
          "reduction"
        ],
        [
          "voltage",
          "voltage"
        ]
      ],
      "raw_glosses": [
        "(electricity) A deliberate reduction in voltage."
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Firefighting",
          "orig": "en:Firefighting",
          "parents": [
            "Emergency services",
            "Fire",
            "Public safety",
            "Combustion",
            "Light sources",
            "Public administration",
            "Security",
            "Chemical processes",
            "Light",
            "Government",
            "Society",
            "Nature",
            "Energy",
            "Politics",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "31 69",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "26 74",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "22 78",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Of firefighting services, a deliberate reduction in multiple service areas during staggered times."
      ],
      "id": "en-rolling_brownout-en-noun-mnBe~fQv",
      "links": [
        [
          "firefighting",
          "firefighting"
        ],
        [
          "service",
          "service"
        ],
        [
          "deliberate",
          "deliberate"
        ],
        [
          "reduction",
          "reduction"
        ],
        [
          "multiple",
          "multiple"
        ],
        [
          "area",
          "area"
        ],
        [
          "staggered",
          "staggered"
        ],
        [
          "time",
          "time"
        ]
      ],
      "raw_glosses": [
        "(firefighting) Of firefighting services, a deliberate reduction in multiple service areas during staggered times."
      ],
      "topics": [
        "firefighting",
        "government"
      ]
    }
  ],
  "word": "rolling brownout"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "rolling brownouts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rolling brownout (plural rolling brownouts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Electricity"
      ],
      "glosses": [
        "A deliberate reduction in voltage."
      ],
      "links": [
        [
          "electricity",
          "electricity"
        ],
        [
          "deliberate",
          "deliberate"
        ],
        [
          "reduction",
          "reduction"
        ],
        [
          "voltage",
          "voltage"
        ]
      ],
      "raw_glosses": [
        "(electricity) A deliberate reduction in voltage."
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [
        "en:Firefighting"
      ],
      "glosses": [
        "Of firefighting services, a deliberate reduction in multiple service areas during staggered times."
      ],
      "links": [
        [
          "firefighting",
          "firefighting"
        ],
        [
          "service",
          "service"
        ],
        [
          "deliberate",
          "deliberate"
        ],
        [
          "reduction",
          "reduction"
        ],
        [
          "multiple",
          "multiple"
        ],
        [
          "area",
          "area"
        ],
        [
          "staggered",
          "staggered"
        ],
        [
          "time",
          "time"
        ]
      ],
      "raw_glosses": [
        "(firefighting) Of firefighting services, a deliberate reduction in multiple service areas during staggered times."
      ],
      "topics": [
        "firefighting",
        "government"
      ]
    }
  ],
  "word": "rolling brownout"
}