"Hub" meaning in English

{
  "forms": [
    {
      "form": "the Hub",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "the Hub"
      },
      "expansion": "the Hub",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "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"
        }
      ],
      "derived": [
        {
          "word": "Hubbite"
        }
      ],
      "glosses": [
        "Nickname for Boston, Massachusetts, United States."
      ],
      "id": "en-Hub-en-name-ZZaeIjVd",
      "links": [
        [
          "Boston",
          "Boston"
        ],
        [
          "Massachusetts",
          "Massachusetts"
        ],
        [
          "United States",
          "United States"
        ]
      ],
      "raw_glosses": [
        "(informal) Nickname for Boston, Massachusetts, United States."
      ],
      "related": [
        {
          "word": "the Hub"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "Hub"
}

{
  "derived": [
    {
      "word": "Hubbite"
    }
  ],
  "forms": [
    {
      "form": "the Hub",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "the Hub"
      },
      "expansion": "the Hub",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "the Hub"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English proper nouns",
        "English uncountable nouns",
        "en:City nicknames"
      ],
      "glosses": [
        "Nickname for Boston, Massachusetts, United States."
      ],
      "links": [
        [
          "Boston",
          "Boston"
        ],
        [
          "Massachusetts",
          "Massachusetts"
        ],
        [
          "United States",
          "United States"
        ]
      ],
      "raw_glosses": [
        "(informal) Nickname for Boston, Massachusetts, United States."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "Hub"
}