"Motor City" meaning in English

{
  "etymology_text": "In reference to its early influence on the automotive industry.",
  "forms": [
    {
      "form": "the Motor City",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Motor City"
      },
      "expansion": "the Motor City",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "City nicknames",
          "orig": "en:City nicknames",
          "parents": [
            "Cities",
            "Nicknames",
            "Polities",
            "Names",
            "Places",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Detroit",
          "orig": "en:Detroit",
          "parents": [
            "Michigan, USA",
            "United States",
            "North America",
            "America",
            "Earth",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A nickname for Detroit, Michigan."
      ],
      "id": "en-Motor_City-en-name-THodPg3v",
      "links": [
        [
          "nickname",
          "nickname#English"
        ],
        [
          "Detroit",
          "Detroit#English"
        ],
        [
          "Michigan",
          "Michigan#English"
        ]
      ],
      "raw_glosses": [
        "(US) A nickname for Detroit, Michigan."
      ],
      "synonyms": [
        {
          "word": "Motown"
        }
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "Motor City"
}

{
  "etymology_text": "In reference to its early influence on the automotive industry.",
  "forms": [
    {
      "form": "the Motor City",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Motor City"
      },
      "expansion": "the Motor City",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "American English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:City nicknames",
        "en:Detroit"
      ],
      "glosses": [
        "A nickname for Detroit, Michigan."
      ],
      "links": [
        [
          "nickname",
          "nickname#English"
        ],
        [
          "Detroit",
          "Detroit#English"
        ],
        [
          "Michigan",
          "Michigan#English"
        ]
      ],
      "raw_glosses": [
        "(US) A nickname for Detroit, Michigan."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Motown"
    }
  ],
  "word": "Motor City"
}