"moving pavement" meaning in English

{
  "forms": [
    {
      "form": "moving pavements",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "moving pavement (plural moving pavements)",
      "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": "1960 November, “News in Brief”, in Trains Illustrated, page 649",
          "text": "Britain's first \"moving pavement\", the 104-yds.-long Travolater linking the Waterloo & City Tube station with the L.T. concourse at the Bank, London, was brought into use on September 27.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A moving walkway."
      ],
      "id": "en-moving_pavement-en-noun-9bVAHd~P",
      "links": [
        [
          "moving walkway",
          "moving walkway"
        ]
      ],
      "raw_glosses": [
        "(British) A moving walkway."
      ],
      "tags": [
        "British"
      ]
    }
  ],
  "word": "moving pavement"
}

{
  "forms": [
    {
      "form": "moving pavements",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "moving pavement (plural moving pavements)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1960 November, “News in Brief”, in Trains Illustrated, page 649",
          "text": "Britain's first \"moving pavement\", the 104-yds.-long Travolater linking the Waterloo & City Tube station with the L.T. concourse at the Bank, London, was brought into use on September 27.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A moving walkway."
      ],
      "links": [
        [
          "moving walkway",
          "moving walkway"
        ]
      ],
      "raw_glosses": [
        "(British) A moving walkway."
      ],
      "tags": [
        "British"
      ]
    }
  ],
  "word": "moving pavement"
}