"power down" meaning in English

{
  "forms": [
    {
      "form": "powers down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "powering down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "powered down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "powered down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "power down (third-person singular simple present powers down, present participle powering down, simple past and past participle powered down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (down)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014 June 29, Adam Sherwin, “UK cinemas ban Google glasses over piracy risk”, in The Independent",
          "text": "Google Glass batteries power down after 45 minutes of continuous recording, making it unlikely anyone could capture an entire film.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To switch off (something electrical)."
      ],
      "id": "en-power_down-en-verb-U6AVaIZE",
      "links": [
        [
          "transitive",
          "transitive"
        ],
        [
          "intransitive",
          "intransitive"
        ],
        [
          "switch off",
          "switch off"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To switch off (something electrical)."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ]
    }
  ],
  "word": "power down"
}

{
  "forms": [
    {
      "form": "powers down",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "powering down",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "powered down",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "powered down",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "power down (third-person singular simple present powers down, present participle powering down, simple past and past participle powered down)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English intransitive verbs",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (down)",
        "English terms with quotations",
        "English transitive verbs",
        "English verbs"
      ],
      "examples": [
        {
          "ref": "2014 June 29, Adam Sherwin, “UK cinemas ban Google glasses over piracy risk”, in The Independent",
          "text": "Google Glass batteries power down after 45 minutes of continuous recording, making it unlikely anyone could capture an entire film.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To switch off (something electrical)."
      ],
      "links": [
        [
          "transitive",
          "transitive"
        ],
        [
          "intransitive",
          "intransitive"
        ],
        [
          "switch off",
          "switch off"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To switch off (something electrical)."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ]
    }
  ],
  "word": "power down"
}