"caravan city" meaning in English

{
  "etymology_text": "Coined by Michael Rostovtzeff (1870-1952).",
  "forms": [
    {
      "form": "caravan cities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "caravan city (plural caravan cities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Cities",
          "orig": "en:Cities",
          "parents": [
            "Polities",
            "Places",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A city, such as some of those in the ancient Near East, which is located on and deriving its prosperity from its location on a major trans-desert trade route."
      ],
      "id": "en-caravan_city-en-noun-~JqmIHP1",
      "links": [
        [
          "Near East",
          "Near East"
        ],
        [
          "trade route",
          "trade route"
        ]
      ],
      "raw_glosses": [
        "(historical) A city, such as some of those in the ancient Near East, which is located on and deriving its prosperity from its location on a major trans-desert trade route."
      ],
      "tags": [
        "historical"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "city",
          "word": "karavaanikaupunki"
        }
      ],
      "wikipedia": [
        "Michael Rostovtzeff"
      ]
    }
  ],
  "word": "caravan city"
}

{
  "etymology_text": "Coined by Michael Rostovtzeff (1870-1952).",
  "forms": [
    {
      "form": "caravan cities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "caravan city (plural caravan cities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with non-redundant non-automated sortkeys",
        "en:Cities"
      ],
      "glosses": [
        "A city, such as some of those in the ancient Near East, which is located on and deriving its prosperity from its location on a major trans-desert trade route."
      ],
      "links": [
        [
          "Near East",
          "Near East"
        ],
        [
          "trade route",
          "trade route"
        ]
      ],
      "raw_glosses": [
        "(historical) A city, such as some of those in the ancient Near East, which is located on and deriving its prosperity from its location on a major trans-desert trade route."
      ],
      "tags": [
        "historical"
      ],
      "wikipedia": [
        "Michael Rostovtzeff"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "city",
      "word": "karavaanikaupunki"
    }
  ],
  "word": "caravan city"
}