"school run" meaning in English

{
  "forms": [
    {
      "form": "school runs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "school run (plural school runs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "84 16",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2006 April 30, Cole Moreton, “The school run”, in The Independent",
          "text": "A billion trips are made on the school run every year and, between us, parents produce two million extra tons of the greenhouse gas carbon dioxide, a cause of global warming.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "increased traffic due to the number of parents taking or collecting their children to and from school by car."
      ],
      "id": "en-school_run-en-noun-2dBx7fw8",
      "links": [
        [
          "increase",
          "increase"
        ],
        [
          "traffic",
          "traffic"
        ],
        [
          "school",
          "school"
        ],
        [
          "car",
          "car"
        ]
      ]
    },
    {
      "glosses": [
        "a car trip to and from the school to transport a student."
      ],
      "id": "en-school_run-en-noun-ijvU0E2c"
    }
  ],
  "wikipedia": [
    "school run"
  ],
  "word": "school run"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "school runs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "school run (plural school runs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2006 April 30, Cole Moreton, “The school run”, in The Independent",
          "text": "A billion trips are made on the school run every year and, between us, parents produce two million extra tons of the greenhouse gas carbon dioxide, a cause of global warming.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "increased traffic due to the number of parents taking or collecting their children to and from school by car."
      ],
      "links": [
        [
          "increase",
          "increase"
        ],
        [
          "traffic",
          "traffic"
        ],
        [
          "school",
          "school"
        ],
        [
          "car",
          "car"
        ]
      ]
    },
    {
      "glosses": [
        "a car trip to and from the school to transport a student."
      ]
    }
  ],
  "wikipedia": [
    "school run"
  ],
  "word": "school run"
}