"battle bus" meaning in English

{
  "forms": [
    {
      "form": "battle buses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "battle bus (plural battle buses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1979 April 10, Ian Aitken, “PM smites the Tories with his crusading zeal”, in The Guardian, London: Guardian News & Media Limited, retrieved 2017-05-13, page 1",
          "text": "[Photo shows Steel sitting on a coach emblazoned with \"DAVID STEEL'S LIBERAL BATTLE BUS\". Photo caption reads:] STEEL'S ON WHEELS: Setting off from the National Liberal Club in his battle bus.",
          "type": "quotation"
        },
        {
          "ref": "1995, Margaret Thatcher, The Downing Street years",
          "text": "Painted blue, the Battle Bus bore the slogan 'Moving Forward with Maggie'.",
          "type": "quotation"
        },
        {
          "ref": "2000, Murray Ritchie, Scotland Reclaimed: The inside story of Scotland's first democratic parliamentary election",
          "text": "Word comes from Edinburgh that our colleagues are rebelling against the LibDems' charge of £1300 for a seat on their battle bus which today, we hear, had only one passenger.",
          "type": "quotation"
        },
        {
          "ref": "2006 October, ThirdWay, volume 29, number 8",
          "text": "I remember in 1997 the BBC gave the Green Party five minutes to say whatever it wanted (within reason) and it chose to fill its slot with images of its activists on a battle bus, whizzing into a petrol station, leaping out and hurling abuse at people for filling their tanks.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A bus that is used as a mobile office and publicity centre by a politician or party during the run-up to an election"
      ],
      "id": "en-battle_bus-en-noun-CuF3K-ts",
      "links": [
        [
          "mobile",
          "mobile"
        ],
        [
          "office",
          "office"
        ],
        [
          "publicity",
          "publicity"
        ],
        [
          "politician",
          "politician"
        ],
        [
          "party",
          "party"
        ],
        [
          "election",
          "election"
        ]
      ],
      "raw_glosses": [
        "(British, informal) A bus that is used as a mobile office and publicity centre by a politician or party during the run-up to an election"
      ],
      "tags": [
        "British",
        "informal"
      ]
    }
  ],
  "word": "battle bus"
}

{
  "forms": [
    {
      "form": "battle buses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "battle bus (plural battle buses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1979 April 10, Ian Aitken, “PM smites the Tories with his crusading zeal”, in The Guardian, London: Guardian News & Media Limited, retrieved 2017-05-13, page 1",
          "text": "[Photo shows Steel sitting on a coach emblazoned with \"DAVID STEEL'S LIBERAL BATTLE BUS\". Photo caption reads:] STEEL'S ON WHEELS: Setting off from the National Liberal Club in his battle bus.",
          "type": "quotation"
        },
        {
          "ref": "1995, Margaret Thatcher, The Downing Street years",
          "text": "Painted blue, the Battle Bus bore the slogan 'Moving Forward with Maggie'.",
          "type": "quotation"
        },
        {
          "ref": "2000, Murray Ritchie, Scotland Reclaimed: The inside story of Scotland's first democratic parliamentary election",
          "text": "Word comes from Edinburgh that our colleagues are rebelling against the LibDems' charge of £1300 for a seat on their battle bus which today, we hear, had only one passenger.",
          "type": "quotation"
        },
        {
          "ref": "2006 October, ThirdWay, volume 29, number 8",
          "text": "I remember in 1997 the BBC gave the Green Party five minutes to say whatever it wanted (within reason) and it chose to fill its slot with images of its activists on a battle bus, whizzing into a petrol station, leaping out and hurling abuse at people for filling their tanks.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A bus that is used as a mobile office and publicity centre by a politician or party during the run-up to an election"
      ],
      "links": [
        [
          "mobile",
          "mobile"
        ],
        [
          "office",
          "office"
        ],
        [
          "publicity",
          "publicity"
        ],
        [
          "politician",
          "politician"
        ],
        [
          "party",
          "party"
        ],
        [
          "election",
          "election"
        ]
      ],
      "raw_glosses": [
        "(British, informal) A bus that is used as a mobile office and publicity centre by a politician or party during the run-up to an election"
      ],
      "tags": [
        "British",
        "informal"
      ]
    }
  ],
  "word": "battle bus"
}